if条件状语从句ppt课件
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高考英语if条件状语从句课件(共34张PPT)
If条件句:条件句用于陈述语气,表示假设的情况可能发生,
其中 if 是“如果”的意思。
构 成
条件从句
主句
时 态
If+一般现在时 主语+shall/will+动词原形
例 句
If he comes,
he will take us to the zoo.
用法:
1. 如果主句是一般将来时,从句则用一般现在时。
3. 如果主句是祈使句,从句同样要用一般现在时。
Don’t go and play football if you don’t finish your homework.
Please call me if he comes next Sunday.
4.表示假设,表示将会发生和可能发生的事,
或进行提醒警告。 If +句子(一般现在时),+主句(主语will/may/can) +动词)
a good one.
4. If the light _d_o_e_s_n_’t__co_m__e_ (not come) on, _w__a_it (wait) for one minute.
If 条件状语从句(1)
句型结构
祈使句+if条件状语从句 if条件状语从句,+祈使句(从句后加逗号)
时态
果不早点起床,上学就会迟到。
2. If I play games on it , it will go wrong .
如果我用它玩游戏,它就会坏掉。
3. If you finish the homework, you can go home. 如果你作业做完了就可以回家了。
4. If you want to lose weight you must/should eat less bread. 如果你想减肥,你必须少吃面包。 5.If you heat ice it turns to water. (也可用will turn) 如果把冰加热,它就会化成水。
条件状语从句完整课件(共14张PPT)
如果我们提出更优惠的条件,他就会在合同上签 字。
He won't be against us in the meeting providing (that) we ask for his advice in advance.
如果我们提前征求一下他的意见,他就不在会上 反对我们。
5. as ( so ) long as…. “只要…, 就… ” 表示 一种前提条件
I can tell you the truth on condition that you promise to keep a secret.
我可以告诉你真相,条件是你答应保守秘密。
You can pass the custom on condition that we have checked your luggage.你可以通过 海关,但条件是我们得检查完你的行李。
If +虚拟条件句,
1. If I were you,I would invite him to the party.
如果我是你,我会邀请他参加聚会。 I would have arrived much earlier if I had
not been caught in the traffic. 要不是交通堵塞,我本会来得早一些。 If it should be true, it would be silly to
down. 如果你考试不及格,你会让他失望的。
如果你作业做完了就可以回家了。 If you have finished the homework, you
can go home.
1. If 从句 (一般现在时), 主句 ( 一般现在时 )
表示科学常识,说明, 经常性的动作,倾向 自动会发生的事
He won't be against us in the meeting providing (that) we ask for his advice in advance.
如果我们提前征求一下他的意见,他就不在会上 反对我们。
5. as ( so ) long as…. “只要…, 就… ” 表示 一种前提条件
I can tell you the truth on condition that you promise to keep a secret.
我可以告诉你真相,条件是你答应保守秘密。
You can pass the custom on condition that we have checked your luggage.你可以通过 海关,但条件是我们得检查完你的行李。
If +虚拟条件句,
1. If I were you,I would invite him to the party.
如果我是你,我会邀请他参加聚会。 I would have arrived much earlier if I had
not been caught in the traffic. 要不是交通堵塞,我本会来得早一些。 If it should be true, it would be silly to
down. 如果你考试不及格,你会让他失望的。
如果你作业做完了就可以回家了。 If you have finished the homework, you
can go home.
1. If 从句 (一般现在时), 主句 ( 一般现在时 )
表示科学常识,说明, 经常性的动作,倾向 自动会发生的事
if引导的条件状语从句PPT课件
• ② If there is no water, fish can‟t live.
→ Fish can‟t live without water. 离开水,
鱼不能生存。
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1. if从句用一般现在时,主句用一般将来时 If he runs, he’ll get there in time. 如果他用跑的,他就 会及时赶到那儿。 The cat will scratch you if you pull her tail. 如果你拉猫 的尾巴,它就会抓你。
• 结果状语从句 • 条件状语从句 • 目的状语从句 • 比较状语从句
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If 引导的条件状语从句
Hale Waihona Puke • 定义:If “如果,假如” 它引导的句子表示 某事发生所需要的条件,即“在…条件下, 某时可能发生”,在句子中充当状语,因此 称之为条件状语从句
• 位置:从句可放在主句之前或之后,放在 主句之前必须有逗号隔开。
• [解码句子结构] • if 引导的条件状语从句位置灵活,可直接放在主句后面,也可以放在句
首。放在句首时,从句后面要用逗号和主句隔开。如:
• I’ll go to see you if I have time. 如果有时间,我就去看你。 • If it rains tomorrow, we’ll stay at home. 如果明天下雨,我们就呆在家里。 • [解码时态呼应] • 在复合句中:⑴ 当主句是一般现在时或是一般将来时时;(2)当主句是
Eg: If I have enough money, I will travel around the world.= I will travel around the world if I have enough money.
《if条件状语从句》课件
if条件状语从句的基本用法
1 表达假设
if条件状语从句常用于表达假设,描述可能发生的情况。
2 引导结果
if条件状语从句还可以引导结果,说明由于某种条件发生,造成了一种结果。
if条件状语从句和现在时态的连用
一般现在时
if条件状语从句与一般现在时连用,表示一种普 遍真实的情况。
现在进行时
if条件状语从句与现在进行时连用,表示正在发 生的动作或状态。
3
练习三
根据上下文补全句子:I will go to the party if I ______ an invitation.
if条件状语从句中的注意事项
1 逗号的使用
2 否定形式
当if条件状语从句位于主句之前时,两者之间 可以用逗号隔开。
if条件状语从句中使用否定形式时,主句的谓 语动词要变为肯定形式。
if条件状语从句的常见练习
1
练习一
完成以下句子:如果我明天有时间,我______。
2
练习二ቤተ መጻሕፍቲ ባይዱ
选择正确的if条件状语从句:______ it rains, we will stay at home.
《if条件状语从句》PPT 课件
欢迎来到《if条件状语从句》PPT课件!在本课程中,我们将探讨if条件状语 从句的定义、结构以及各种用法,让您轻松掌握这一重要语法知识点。
if条件状语从句的定义和结构
if条件状语从句是指描述某种情况下,另一种情况会发生的句子结构。它由一 个if引导,并包含一个主句和一个从句。
if条件状语从句和过去时态的连用
一般过去时
if条件状语从句与一般过去时连用,表示过去某个时 间或条件下的情况。
过去进行时
if引导的条件状语从句教学课件
the cinema.
(2012黑龙江) 2.I’ll buy a computer if I _h_a_v_e__(have__w_o_n’_t _g_e_t _(not get) nervous if you _d_o___(do )
enough exercise.
还有其他连词可以引导条件状语 从句呢
1. as ( so ) long as…. “只要…, 就… ” 表示 一种前提条件
• You’ll succeed as (so ) long as ( if only ) you try hard.
• 只要你努力,你就会成功。 无忧PPT整理发布
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2.unless .除非;若不;如果 不……;除非在……时候
If I’m late, _I _w_i_ll__s_a_y_s__o_r_ry____.
无忧PPT整理发布
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Look and say
If I’m hungry,
I will_e_a_t_s_o_m__e__fo_o_d__.
If I’m tired,
I will__h_a_v_e_a__r_e_s_t __.
无忧PPT整理发布
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If it rains tomorrow, I_w_i_l_l _w_a_t_c_h__T_V__a_t_h__o_m__e.
If it _d_o_e_s__n_’t__ra_i_n__ tomorrow,
_I’_ll_p_l_a_y_b_a_s_k_e_t_b_a_ll_.
无忧PPT整理发布
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2.If 从句 (一般现在时), 主句 ( 一般现在时 )
• 表示科学常识、事实、 经常性的动作或倾向 自动会发生的事
(2012黑龙江) 2.I’ll buy a computer if I _h_a_v_e__(have__w_o_n’_t _g_e_t _(not get) nervous if you _d_o___(do )
enough exercise.
还有其他连词可以引导条件状语 从句呢
1. as ( so ) long as…. “只要…, 就… ” 表示 一种前提条件
• You’ll succeed as (so ) long as ( if only ) you try hard.
• 只要你努力,你就会成功。 无忧PPT整理发布
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2.unless .除非;若不;如果 不……;除非在……时候
If I’m late, _I _w_i_ll__s_a_y_s__o_r_ry____.
无忧PPT整理发布
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Look and say
If I’m hungry,
I will_e_a_t_s_o_m__e__fo_o_d__.
If I’m tired,
I will__h_a_v_e_a__r_e_s_t __.
无忧PPT整理发布
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If it rains tomorrow, I_w_i_l_l _w_a_t_c_h__T_V__a_t_h__o_m__e.
If it _d_o_e_s__n_’t__ra_i_n__ tomorrow,
_I’_ll_p_l_a_y_b_a_s_k_e_t_b_a_ll_.
无忧PPT整理发布
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2.If 从句 (一般现在时), 主句 ( 一般现在时 )
• 表示科学常识、事实、 经常性的动作或倾向 自动会发生的事
初中英语if条件状语从句ppt课件
If she doesn’t exercise enough,
she will be heavier. 1.主将从现
可编辑课件PPT
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If he cleans the room , he can get $10 from his mother .
If I watch TV late , I can’t get up early . If you get up late , you must take a bus to school .
8. If I _h_a_v_e_(have) much money in the future, I will travel all over the world.
可编辑课件PPT
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1.用所给词的正确形式填空。 1.If youa_r_e (be) late, the teacher
will be angry. 2.He _w__il_l _b_e_c_o_m_e_(become) a soccer
可编辑课件PPT
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5. If you _w__o_rk__(work) hard, your dream will come true.
6. If shes_t_u_d_ie_s_(study) hard, She will go to Beijing University.
7. If it _i_s_r_a_iny( rainy )tomorrow, I will play the piano.
give present, you are happy. I hope it won’t rain that day. ②
will be Because if it won’t rain, my little son will come, too. ③
If引导的条件状语从句ppt课件
Please call me if you go shopping next Sunday.
完整最新ppt
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If 引导的条件状语从句
If I go there,I'll take her some flowers. We'll stay at home if it rains tomorrow. Please call me if he’s at home.
9.Hurry up!Or you ______(be)late again.
The teacher will be angry if he is late.
完整最新ppt
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If 引导的条件状语从句
If引导的条件状语从句与unless引导的条件状语从句的转换
If+否定形式=unless+肯定形式
You won’t pass the exam if you don’t work hard. =You won’t pass the exam unless you work hard.
If you don’t go to bed earlier,you will feel tired in the morning. =Unless you go to bed earlier,you will feel tired in the morning.
If it doesn’t rain,he will play with me tomorrow. =Unless it rains,he will play with me tomorrow.
If she doesn’t come,I’ll go shopping alone. =Unless she comes,I’ll go shopping alone.
if_条件状语从句复习课件
If I’m late, I will say sorry _________________.
无忧PPT整理发布
Look and say If I’m hungry, eat some food I will______________.
If I’m tired, have a rest I will_____________.
The mother promised to buy her son a bike on condition that he pass the English test.
妈妈答应给她儿子买自行车的条件是他英语考试必须及格。
无忧PPT整理发布
Suppose, supposing 如果,假如
Suppose ( Supposing) he is absent, what shall we do? 假如他缺席,我们怎么办? Supposing (that) you miss him, he is not likely to miss you. 即使你碰不到他,他也可能碰到你。
• 2. 非真实条件句是虚拟语气的一种,表示与事 实相反 ,不可实现的条件或根本不可能存在的 条件,也就是一种虚拟的条件或假设,从句多用 一般过去时或过去完成时。 • 如: If I were you, I would invite him to the party. • 如果我是你,我会邀请他参加聚会。 • I would have arrived much earlier if I had not been caught in the traffic. • 如果没有堵车,我会到的早一点儿。 • If I were you, I would go with him. • 如果我是你,我会和他一起去的。 无忧PPT整理发布
原创PPT八上U10语法课(If条件状语从句)
通过改错练习,加深 对if条件状语从句的 理解和运用。
翻译题训练
将中文句子翻译成英文,注意使 用if条文表达差异,提高 翻译准确性和流畅度。
分析翻译难点和易错点,总结翻 译技巧和方法。
写作题训练
根据所给话题和提示,运用if条 件状语从句写一篇短文。
注意文章结构、逻辑关系和语 言表达的准确性和得体性。
通过写作练习,提高运用if条件 状语从句的能力和写作水平。
THANKS
感谢观看
主过从过
主句用一般过去时,从句也用过 去的某种时态。例如:If I had time yesterday, I would have
gone shopping.
语态应用技巧
主动语态
表示主语是动作的执行者。在If条件状语从句中, 常用主动语态表示条件或假设。
被动语态
表示主语是动作的承受者。在某些情况下,为了 强调动作的对象或使句子更加客观,可以使用被 动语态。
If条件状语从句也可以位于主句之后,不用逗号与 02 主句隔开,表示“如果……就”。
在某些情况下,If条件状语从句还可以插入到主句 03 中间,但需要用逗号将其与主句其他部分隔开。
引导主从复合句功能
01 If条件状语从句可以引导一个主从复合句,其中主 句表示结果,从句表示条件。
02 If条件状语从句的引导功能使得句子结构更加复杂 ,能够表达更加丰富的语义关系。
02 通过使用If条件状语从句,可以使句子更加紧凑, 避免过多的简单句堆砌。
省略情况
在某些情况下,If条件状语从句可以省略if,而将条件部分放到主句前面,形成倒装 句。
当If条件状语从句中的主语与主句主语相同时,从句中的主语和be动词可以省略, 形成省略句。
if条件状语从句 语法 (课堂PPT)
4
What will you do if you’re happy?
❖ If I’m happy, I will _cl_a_p_m__y_h_a_n_d_s_. ❖ If I’m happy, I will _s_ta_m__p_m__y_f_e_e_t . ❖ If I’m happy, I will _n_o_d_m__y_h_e_a_d__. ❖ If I’m happy, I will __w_i_n_k_m__y__e_y_e_s_.
_w__a_it (wait) for one minute.
2
If 条件状语从句(1) 句型结构
祈使句+if条件状语从句 if条件状语从句,+祈使句(从句后加逗号)
时态
if条件状语从句要用一般现在时。
3
Let’s sing the song in Chinese:
If you are happy
Module 5 Problems
If从句(条件状语从句)
1
Complete the sentences with the correct form of the words.
1.If you __li_s_te_n__(listen) to the music, _b_u_y__
(buy) a CD.
5
Look and say
If I’m hungry,
I will_e_a_t_s_o_m__e__fo_o_d__.
If I’m tiபைடு நூலகம்ed,
I will__h_a_v_e_a__r_e_s_t __.
6
Look and say
If I’m ill, _I_w_i_l_l _s_e_e__a_d_o__c_to__r_.
What will you do if you’re happy?
❖ If I’m happy, I will _cl_a_p_m__y_h_a_n_d_s_. ❖ If I’m happy, I will _s_ta_m__p_m__y_f_e_e_t . ❖ If I’m happy, I will _n_o_d_m__y_h_e_a_d__. ❖ If I’m happy, I will __w_i_n_k_m__y__e_y_e_s_.
_w__a_it (wait) for one minute.
2
If 条件状语从句(1) 句型结构
祈使句+if条件状语从句 if条件状语从句,+祈使句(从句后加逗号)
时态
if条件状语从句要用一般现在时。
3
Let’s sing the song in Chinese:
If you are happy
Module 5 Problems
If从句(条件状语从句)
1
Complete the sentences with the correct form of the words.
1.If you __li_s_te_n__(listen) to the music, _b_u_y__
(buy) a CD.
5
Look and say
If I’m hungry,
I will_e_a_t_s_o_m__e__fo_o_d__.
If I’m tiபைடு நூலகம்ed,
I will__h_a_v_e_a__r_e_s_t __.
6
Look and say
If I’m ill, _I_w_i_l_l _s_e_e__a_d_o__c_to__r_.
If 引导的条件状语从句(共17张PPT)
思考
I don’t know if he _w_il_l _co_m_e_(come)to our party tonight. If he _c_om__es_(come), I will tell you.
结论: 当if作“__如__果__”_讲时,用“主将从现”; 当if作“__是__否__”讲时,根据句意和时态选择合适的时态。
get tired? 7. Where (_w__il_l_/ do/does) they live if they (will miss/ _m_i_s_s_/ misses) the
bus? 8.If you_(_fe__e_l / will feel) hungry, you (s_h__o_u_l_d / must) eat something.
if条件状语从句的意义:表示在某条件下,某事很可能 发生。
语法规则: 1.条件句,放在前,逗号要放句中间; 2.主将从现
If you don’t stay at home, what will you do ? where will you go?
If you don’t stay at home, I __w_i_l_l _g_o_ shopping.
If hazy weather comes,
we will stay at home. /don't go out. /we should drink more water. ...
If 引导的条件状语从句
Learning objectives(学习目标):
1.Master the sstrtruucctuturreeaanndduussee of conditional
TIfhahta’szynowt eeantohuegrhc.omes,
if_条件状语从句PPT课件
If I get up too late, I will go to school by bus. 如果我起床太迟了,我会坐公交车去上学。 If you walk to school , you will be more healthy. 如果你走路去上学,你会更健康。
If everyone obeys the traffic rules, the roads will be safer. 如果人人都遵守交通规则,道路 会更加安全。
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结束语
当你尽了自己的最大努力时,失败也是伟大的, 所以不要放弃,坚持就是正确的。
When You Do Your Best, Failure Is Great, So Don'T Give Up, Stick To The End
演讲人:XXXXXX 时 间:XX年XX月XX日
Translation
1 如果她早点儿起床,就有时间在家里吃餐。 2 如果你参加聚会,你将会过得很开心。 3 如果明天下雨,我们将不去野餐。 4 如果你经常听英文歌,你将会喜欢英语。
写在最后
成功的基础在于好的学习习惯
The foundation of success lies in good habits
If Adverbial Clauses of Condition If 引导的条件状语从句
What will happen if you go to school late ?
If I go to school late, I will feel nervous
If I get up too late,
Drills/exercise:
1I。f s如he果_她g_e_早t_s点_u儿_p_起_床a l,itt就le有e时ar间lie在r,家sh里e’吃l早l h餐ave time to eat breakfast at home. 2。如果你参加聚会,你将会过得很开心。 If you_jo_i_n_ the party ,you__w_i_ll_h_a_ve__ a great time. 3。如果明天下雨,我们将不去野餐 If it r_a_in_s_tomorrow, we _w_o_n’__t_g_ofor a picnic. 4。如果你经常听英文歌,你将会喜欢英语 If you often _l_is_te_n_t_o_English songs, you_w_i_ll _lik_e_English.
If everyone obeys the traffic rules, the roads will be safer. 如果人人都遵守交通规则,道路 会更加安全。
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结束语
当你尽了自己的最大努力时,失败也是伟大的, 所以不要放弃,坚持就是正确的。
When You Do Your Best, Failure Is Great, So Don'T Give Up, Stick To The End
演讲人:XXXXXX 时 间:XX年XX月XX日
Translation
1 如果她早点儿起床,就有时间在家里吃餐。 2 如果你参加聚会,你将会过得很开心。 3 如果明天下雨,我们将不去野餐。 4 如果你经常听英文歌,你将会喜欢英语。
写在最后
成功的基础在于好的学习习惯
The foundation of success lies in good habits
If Adverbial Clauses of Condition If 引导的条件状语从句
What will happen if you go to school late ?
If I go to school late, I will feel nervous
If I get up too late,
Drills/exercise:
1I。f s如he果_她g_e_早t_s点_u儿_p_起_床a l,itt就le有e时ar间lie在r,家sh里e’吃l早l h餐ave time to eat breakfast at home. 2。如果你参加聚会,你将会过得很开心。 If you_jo_i_n_ the party ,you__w_i_ll_h_a_ve__ a great time. 3。如果明天下雨,我们将不去野餐 If it r_a_in_s_tomorrow, we _w_o_n’__t_g_ofor a picnic. 4。如果你经常听英文歌,你将会喜欢英语 If you often _l_is_te_n_t_o_English songs, you_w_i_ll _lik_e_English.
if条件状语从句-课件(共31张PPT)
hard-working
get good grades
If she is hard-working,
she will get good grades.
Look and say
sunny this Sunday
go fishing .
If it is sunny this Sunday, I’ll go fishing .
• 读下列例句,试着自己总结if 的用法:
• 1. If you heat metal, it melts. • 如果把金属加热,它就会融化。 • 2.Water turns into ice if you cool it. • 如果你冷却水,它就会变成冰。 • 3.If you stand in the rain, you get wet.
A if; Whether B whether; Whether
C if; That D if ; If
3. Please tell her my telephone number if she _____ (want) to know.
wants
4. Will you come and stay with us for a while if you
“如果”。
If 引导的宾语从句可以用将来时,意思为“是
否”。
如果
Betty will visit the History Museum if it __d_o_e_s_n_’_t_r_ai_n_ (rain) tomorrow.
Ben wants to know if it____w_il_l b_e____ (be) fine tomorrow.
P105 B
• William has five problems • Give him some advice from column A and B
get good grades
If she is hard-working,
she will get good grades.
Look and say
sunny this Sunday
go fishing .
If it is sunny this Sunday, I’ll go fishing .
• 读下列例句,试着自己总结if 的用法:
• 1. If you heat metal, it melts. • 如果把金属加热,它就会融化。 • 2.Water turns into ice if you cool it. • 如果你冷却水,它就会变成冰。 • 3.If you stand in the rain, you get wet.
A if; Whether B whether; Whether
C if; That D if ; If
3. Please tell her my telephone number if she _____ (want) to know.
wants
4. Will you come and stay with us for a while if you
“如果”。
If 引导的宾语从句可以用将来时,意思为“是
否”。
如果
Betty will visit the History Museum if it __d_o_e_s_n_’_t_r_ai_n_ (rain) tomorrow.
Ben wants to know if it____w_il_l b_e____ (be) fine tomorrow.
P105 B
• William has five problems • Give him some advice from column A and B
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Revision
Adverbial Clause of Condition if 引导的条件状语从句
-----------复习课Fra bibliotek.If you are happy, what will you do? If I am happy, I will smile.
.
If you become sad, what will you do?
4.如果你去, 我也去。 If you go,I will go.
5.如果明天下雨,请带雨衣。 raincoat excellent
Please take a raincoat if it rains.
.
practice
If you are free this weekend, what will you do ?
If I become sad, I will cry.
.
She is doing her She gets good grades. homework.
If you are hard-working, you will get good grades.
.
If you play computer games on weekdays ,
listen to teachers carefully. do homework by yourself.
• If you want to get good marks, • don’t _c_o_p_y_y_ou_r_h_o_m. ework.
talk in the class cheat in the ex. ams
If you help me, I’ll finish my task on time.
=With your help, I’ll finish my task on time.
.
Activity 1 Rewrite the sentences with if:
If you have enough pocket money, what will you buy?
• If I have enough pocket money, • I ____________________.
.
If you invite foreigners to China, where will you go?
2.如果主句含有must, may, can 等情态动词,从句也要用
一般现在时。
If you drive too fast, you may have an accident. You must stop if the traffic is red.
3. 如果主句是祈使句,从句同样要用一般现在时。
Don’t go and play football if you don’t finish your homework.
If she w__a_lk__s to school, she _w_i_ll__ _b_e_late.
.
1) 条件状语从句通常由if或 unless(=if not)引导,从句中常用 一般时代替将来时,即if或unless 后的句子谓语用一般现在时。但 是,主句则通常用将来时,情态 动词或祈使句。
sleep
If I am free ,… watch TV
play computer games
.
If you want to get good marks, do what? Don’t do what?
• If you want to get good marks, _s_tu_d_y_h_a_rd___.
时态--主将从现 主句一般将来时, 从句一般现在时
.
Revision
if条件状语从句结构及时态
1. 如果主句是一般将来时,从句则用一般现在时。
If it rains(从句), I will stay at home. I’ll go with you if you don’t want to go alone(从句).
Please call me if he comes next Sunday.
.
If 引导条状语从句时,从句中用一般现在时代替 一般将来时。 1. If hego_e_s____(go) to the movies,he won’t finish his work. 2. If I b_e_c_o_m__e__(become) a doctor,I can help others. 3. If we _h_a_v_e___(have )time, we will go to the park tomorrow.
• I will go to _________,
• if I invite foreigners to China.
Mount Tai
West l. ake
Hainan
• If 条件句的替代形式:
• (1)祈使句 + and/or + 陈述句( 谓语动词通常用将来时态)。其中 ,and表示句意顺承;or表示转折 ,意为“否则”。
• = Work hard, or you’ll fall behind
others.
very good
.
(2)用介词with, without的替代形 式:
e.g. If there is no water, the fish may die.
= Fish may die without water.
• e.g. If you work hard, you’ll pass the exam easily.
• = Work hard, and you’ll pass the exam easily.
• If you don’t work hard, you’ll fall behind others.
you’ll be very tired in class your parents will be sad. you won’t get good grades.
your eyes will be poor.
Lead-in
She is going to walk to school.
She will be late.
Adverbial Clause of Condition if 引导的条件状语从句
-----------复习课Fra bibliotek.If you are happy, what will you do? If I am happy, I will smile.
.
If you become sad, what will you do?
4.如果你去, 我也去。 If you go,I will go.
5.如果明天下雨,请带雨衣。 raincoat excellent
Please take a raincoat if it rains.
.
practice
If you are free this weekend, what will you do ?
If I become sad, I will cry.
.
She is doing her She gets good grades. homework.
If you are hard-working, you will get good grades.
.
If you play computer games on weekdays ,
listen to teachers carefully. do homework by yourself.
• If you want to get good marks, • don’t _c_o_p_y_y_ou_r_h_o_m. ework.
talk in the class cheat in the ex. ams
If you help me, I’ll finish my task on time.
=With your help, I’ll finish my task on time.
.
Activity 1 Rewrite the sentences with if:
If you have enough pocket money, what will you buy?
• If I have enough pocket money, • I ____________________.
.
If you invite foreigners to China, where will you go?
2.如果主句含有must, may, can 等情态动词,从句也要用
一般现在时。
If you drive too fast, you may have an accident. You must stop if the traffic is red.
3. 如果主句是祈使句,从句同样要用一般现在时。
Don’t go and play football if you don’t finish your homework.
If she w__a_lk__s to school, she _w_i_ll__ _b_e_late.
.
1) 条件状语从句通常由if或 unless(=if not)引导,从句中常用 一般时代替将来时,即if或unless 后的句子谓语用一般现在时。但 是,主句则通常用将来时,情态 动词或祈使句。
sleep
If I am free ,… watch TV
play computer games
.
If you want to get good marks, do what? Don’t do what?
• If you want to get good marks, _s_tu_d_y_h_a_rd___.
时态--主将从现 主句一般将来时, 从句一般现在时
.
Revision
if条件状语从句结构及时态
1. 如果主句是一般将来时,从句则用一般现在时。
If it rains(从句), I will stay at home. I’ll go with you if you don’t want to go alone(从句).
Please call me if he comes next Sunday.
.
If 引导条状语从句时,从句中用一般现在时代替 一般将来时。 1. If hego_e_s____(go) to the movies,he won’t finish his work. 2. If I b_e_c_o_m__e__(become) a doctor,I can help others. 3. If we _h_a_v_e___(have )time, we will go to the park tomorrow.
• I will go to _________,
• if I invite foreigners to China.
Mount Tai
West l. ake
Hainan
• If 条件句的替代形式:
• (1)祈使句 + and/or + 陈述句( 谓语动词通常用将来时态)。其中 ,and表示句意顺承;or表示转折 ,意为“否则”。
• = Work hard, or you’ll fall behind
others.
very good
.
(2)用介词with, without的替代形 式:
e.g. If there is no water, the fish may die.
= Fish may die without water.
• e.g. If you work hard, you’ll pass the exam easily.
• = Work hard, and you’ll pass the exam easily.
• If you don’t work hard, you’ll fall behind others.
you’ll be very tired in class your parents will be sad. you won’t get good grades.
your eyes will be poor.
Lead-in
She is going to walk to school.
She will be late.