英语人教版八年级上册if引导的条件状语从句
初中英语人教版八年级上册if引导的条件状语从句
这里if所引导的是真实条件句(real conditional), 即所 假设的条件有可能成为现实, 表达假定所假设的条件 实现时会出现的情况或会采取的行为。பைடு நூலகம்时, 我们 可以使用并列结构的祈使句来表达这种类型的条件句。
e.g. If you set your alarm clock, you won’t oversleep. 如果你上闹钟, 你就不会睡过头了。 Set your alarm clock, and you won’t oversleep.
if引导的条件状语从句
吉林省长春市农安县龙王乡初级中学
华瑜
I will have a good time tomorrow. I will go to the party tomorrow. 合并 If I go to the party tomorrow, I’ll have a good time. if引导一个条件状语从句 当主句是一般将来时时, if引导的从句必须用 现在时来表示将来可能发生的动作或存在的状态。
We are leaving for Amoy tomorrow if it doesn’t rain.
如果明天不下雨, 我们就去厦门。
We will buy that microwave next week if its price
keeps going down.
如果价格持续下降, 下个礼拜我们就买那台微波炉。
在英语里, 当句子的主句为将来时态时, 它所引导的
时间状语从句和条件状语从句都使用一般现在时来
表示将来时间, 这在英语里被称为“主将从现”。
主句的将来时态并不仅限于我们这一课里所学习到
的will+动词原形构成的一般将来时, 还包括be
新人教版八年级上_unit10_If_you_go_to_the_party__you’ll___have_a_good_time_Section_B
careless做形容词,意为“粗心 的”“不小心的”, 在句中可用作定语或表语。 如:It was careless of you to leave the door unlocked. 你没锁门,太粗心了。 The careless waiter dropped the dish onto the ground. 那个粗心的侍者把盘子摔到了地上。
Language points
1. If people have problems ,they should try to keep them to themselves. keep....to oneself意为“保守秘密”, 如:One must keep such interests to oneself. 有这类爱好不该让人知道。 We should keep their worries to themselves。 我们应该为他们的忧虑保守秘密。 keep....to oneself还可意为“不与人来往;不交际”, 如:Keep sb at arm's length not allow oneself to become too friendly with sb. 与某人保持距离;不使自己太亲近某人。
Students these days often have a lot of worries. Sometimes they have problems with their schoolwork, and sometimes with their friends. What can they do about this? Some people believe the worst thing is to do nothing. Laura Mills, a teenager from London, agrees. ”Problems and worries are normal in life,” says Laura. “But I think talking to someone helps a lot. Unless we talk to someone, we’ll certainly feel worse.”
Unit 10 if 引导的条件状语从句课件2024-2025学年人教版英语八年级上册
If I am late, the teacher will be angry with me.
What will happen if your teacher is angry with you?
If the teacher is angry with me, I will be sad.
What will happen if you are sad? If I am sad, I will cry.
5. Don’t _c_r_o_s_s_ (cross) the road if the light _i_s_ (be) red.
6. If you _w__o_rk__ (work) really hard, you _w_i_l_l _b_e_ (be) famous and rich.
( ) Johnson won’t answer the phone if he ___________ the number. A. knew B. doesn’t know
If I study hard, I will go to Beijing University.
What will happen if you get up at 9:00 this morning ?
If I get up at 9:00, I will be late.
What will happen if you are late?
If you don’t go to the party, what will you do?
If I don’t go to the party, I will sleep at home.
英语人教新目标八年级上册if引导的条件状语从句的基本用法
If it rains tomorrow, won't/ can't play basketball he______________________.
He can eat some rice, if _h__e_f_e_e_l_s_/_i_s_h_u__n_g_r_y_.
3. Please call me if you come back.
if 条件状语从句中,主句是祈使句,从句用 _一__般__现__在__时___表示将来。 Don’ t wait for me if I __a_m__ (be) late.
Exercises Make sentences according to the pictures.
Revision
Look at the pictures and make sentences with “ if ”.
If you go to the party with Karen and Anna, you’ll have a good time.
If you wear jeans to the party, the teachers won’t let you in.
含if条件状语从句的主从复合句 1. If you go there by bike, you will be late.
if 条件状语从句中,主句用一般将来时,从句用 一__般__现__在__时___表示将来。遵从主_将__从__现____原则。
We will go to the park if it _d_o_e_s_n_’_t __r_a_i_n_ (not rain) tomorrow.
人教版英语八年级上册Unit10名师指导:if引导的条件状语从句
名师指导:if引导的条件状语从句引导条件状语从句最常用的连词是if,常见的if条件状语从句表示在某条件下,某事很可能发生,条件是可能存在的,主句中某种情况发生的概率也是很高的。
如:If you ask him,he will help you.如果你请他帮助,他会帮你的。
If you fail in the exam,you will let him down.如果你考试不及格,你会让他失望的。
If you have finished the homework,you can go home.如果你作业做完了就可以回家了。
另外,if从句还表示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,表示对现在或过去的一种假设。
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.要不是交通堵塞,我本会来得早一些。
另外你还要注意if 条件句的时态搭配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。
2.if从句用一般现在时,主句用may/might/canIf the fog gets thicker the plane may/might be diverted. 如果雾在大一些,飞机可能就会改在别的机场降落。
If it stops snowing we can go out. 如果雪停了,我们就可以出去。
3.if从句用一般现在时,主句用must/shouldIf you want to lose weight you must/should eat less bread. 如果你想减肥,你必须少吃面包。
人教版英语初二上册 17Unit 10 if条件状语从句及其时态的用法 词句精讲精练和巩固练习
专项语法讲练——if条件状语从句及其时态的用法【概念引入】英国前首相撒切尔夫人(Margaret Thatcher)曾用if条件句对男人和女人进行评价:In politics, if you want someone to make a speech, ask a man; if you want something done, ask a woman.在政治领域,如果你想要有人发表演说,那就找男士去;而如果你想真正把事情解决,那就找女士。
【用法讲解】一、概念连词if的意思是“如果”,它引导的句子表示某事发生所需要的条件,即“在……条件下某事才能发生”,在句子中充当状语,因此我们称之为条件状语从句。
在复合句中连词if引导的句子为从句,被修饰的句子为主句。
从句可以放在主句后,也可以放在主句前,从句放在主句前时,应用逗号将它与主句隔开。
例如:We’ll go to the Great Wall if it doesn’t rain tomorrow. = If it doesn’t rain tomorrow, we’ll go to the Great Wall. 如果明天不下雨,我们就去长城。
二、用法1. 条件状语从句通常由连词if引导,意为“如果,假如”,主句不能用be going to 表示将来,而应该用shall或will。
例如:If I’m free tomorrow, I’ll go with you. 如果我明天有空,我将会和你一起去。
2. if引导的条件状语从句,主句用一般将来时,从句则用一般现在时,即“主将从现”。
例如:If it is sunny tomorrow, I’ll climb the hill. 如果明天天气晴朗,我将去爬山。
3. 正确区分if引导的条件状语从句和if引导的宾语从句。
在条件状语从句中,if表示“如果”;而在宾语从句中,if表示“是否”。
可以用下面的方法区分:1) 从句前置法:if引导的条件状语从句,可以放在主句之前并用逗号隔开,也可放在主句之后;而if引导的宾语从句只能放在主句之后。
Unit10if条件状语从句课件人教版英语八年级上册
用法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。
She is going to walk to school.
Shes to school, she m__u_s_t_ _b_e_late.
用法3:如果主句是祈使句,从句同样要用一般现在时。
It will be sunny tomorrow.
Let’s have a trip tomorrow.
If it __is__ sunny tomorrow, Let’s __h_a_v_e_ a trip.
If引导条件状语从句,遵循:
主将从现 主祈从现 主情从现
一、用括号内所给单词的正确形式填空。 have
___________________________.
If it is sunny this weekend, what won’t you do ?
If it is sunny this weekend, I ___w_o_n_’_t_s_t_a_y__a_t_h_o__m_e__.
If it is sunny this weekend, I _w__o_n_’_t _w_a__tc_h__t_e_le__v_is_i_o_n_.
If I have time, I’ll go to see you. I’ll go to see you if I have time.
从主有逗 主从无逗
最常用的引导词有:
• if 如果 • unless (= if not) 除非 • as long as 只要
1. If you want to know, I can tell you.
英语中考语法复习
If条件状语从句
人教版八年级英语上册语法归纳--条件状语从句
If 引导的条件状语从句点拨:一.if 引导条件状语从句时,为连词,意为“如果”。
句子的时态遵循“主将从现”的原则,即当主句为一般将来时,从句用一般现在时。
Eg:1. If I go to the movies, I won’t finish my homework.2. If I leave university, I’ll find a job in the city.3. If she likes it, she will read it soon.4. She won’t be late for school if she takes a taxi.5. If it doesn’t snow, he will play football with me tomorrow.6. If you don’t hurry up, you will be late again.7. If we have the party today, half the class won’t come.8. If I stay at home, I will catch the talent show.9. What will happen if your grandmother is free?10. The teachers won’t let in if you wear sunglasses.11. I’ll do it better if the teacher gives me another chance.12. If you don’t go to Lisa’s party, you’ll be sorry.13. If you stay at home, you’ll get bored.14. If I can’t pass the exam, my parents will be very upset.如果我考试通不过,我的父母将会很失望。
英语人教版八年级上册if引导的条件状语从句
用法一:主句是一般将来时, 从句用一般现在时。 (主将从现)
If you finish your homework, you can go home.
If you want to lose weight, you must eat less bread.
4.Hurry up if you _d_o_n_’t__w_a_n_t(not want) to be late.
Look and say
you
get up late
If you get up late, you’ll be late for school.
late for school
I我
If I have a lot of money, I will buy a big house.
If的两面性(两个意思)
1、if : “如果”, 引导条件状语从句
I will go to the cinema if I am free
tomorrow.
主将从现
2、if: “是否”,引导宾语从句
I don't know if he will come tomorrow. 从句可用将来时
Practice
Please call me if he comes next Sunday.
用法三:主句是祈使句,从句 也要用一般现在时。 (主祈从现)
Exercises: 1.I _w_il_l _s_t_a_y_(stay )at home if Lucy _co_m__e_s (come) tomorrow.
人教版八年级上册if条件状语从句
stay up late
feel sleepy in class
If you stay up late, you’ll feel sleepy in class.
eat too much junk food get fatter and fatter If she eats too much food, she will get fatter and fatter.
Clap your hands. If you‘re happy and you know it,
Stomp your feet. If you‘re happy and you know it, Then your face will surely show it If you’re happy and you know it,
8. Mary will hurt (hurt) your teeth if she eats(eat)too much candy.
9. Everyone must dress up. If you don’t (not), they won’t let you in.
10. What will happen (happen) if he arrives (arrive) late?
grades. ➢ Study hard, or you won’t get good grades. (Unless you study hard…)
➢ Look & say
have lots of money travel around the world If I have lots of money, I will travel around the world.
人教版八年级英语上册IF引导的条件状语从句
一般现在时。 If you drive too fast, you may have an accident. You must stop if the traffic is red.
If you finish the homework, you can go home.
如果你作业做完了就可以回家了。 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。
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.
10.He _w__il_l _w_a_t_c_h(watch) TV ,if he ___ihe g_o_e_s__(go) to the party, he_w__ill_h_a_v_e_ (have) a great time.
2.If the rain __st_o_p_s_(stop) tonight, we will go to the cinema.
状语从句
在复合句中表示的状语
可以用来修饰谓语(包括非谓语 动词)、定语、状语或整个句子。
状语从句 分类
1时间状语从句
6让步状语从句
2地点状语从句
7比较状语从句
3原因状语从句
8方式状语从句
4条件状语从句
9结果状语从句
5目的状语从句
If 引导条件状语从句
定义:If “如果, 假如” 它引导的句子表示某事发生所需的
4。如果你经常听英文歌,你将会喜欢英语
八年级英语Unit 10 语法点If 引导的条件状语从句
单元语法讲练专题语法精讲:If 引导的条件状语从句一.if引导的条件状语从句含义:条件状语从句表示主句动作发生的前提、条件、假想、推测等情况。
位置:if引导的条件状语从句可放在主句后,也可放在主句前(必须用逗号隔开)。
时态:当主句是一般将来时,从句用一般现在时表示将来。
主句从句例句主句是一般将来时从句时态应用一般现在时He will come here on time if it doesn't rain.如果不下雨,他会按时到达这儿。
主句是祈使句Please stay at home if it rains tomorrow. 如果明天下雨,请留在家里。
主句的谓语含有can,may,must等情态动词If you like,you can stay here for the weekend.你如果愿意,可以留在这里过周末。
主句的谓语是hope, wish,want等动词I want to go there if the rain stops.如果雨停了,我想去那儿。
二.if引导的条件状语从句遵循主过从过、主将从现的原则。
(1)主过从过。
If he got up earlier, he would not be late yesterday.如果昨天他早点起床,就不会迟到了。
(2)主将从现。
①If it rains tomorrow, I won't climb the hills.如果明天下雨,我就不去爬山。
②If it doesn't rain tomorrow, I will climb the hills.如果明天不下雨,我就去爬山。
(3)主祈(祈使句)从现。
Climb the hills with me if it doesn't rain tomorrow.如果明天不下雨,和我去爬山吧。
(4)主情(情态动词)从现。
If it doesn't rain tomorrow, I might climb the hills.如果明天不下雨,我可能会去爬山。
Unit 10【刷语法】If引导的条件状语从句(重点语法提升练)-八年级英语上册单元模块满分必刷题
2022-2023学年八年级英语上册单元模块满分必刷题(人教版)Unit 10【刷语法】(重点语法提升练)If引导的条件状语从句条件状语从句通常由if(如果), unless(除非),as long as(只要)引导。
例如:If it rains tomorrow, we won’t go to the park. 如果明天下雨,我们就不去公园了。
Unless weather stops me, I go for a walk every. 我每天都会去散步,除非遇上坏天气。
Our parents will be pleased with our performance as long as we try our best.if引导的条件状语从句(1)“if从句+祈使句”的句子。
其实,if作为一个连词,主句也可以是其他形式的句子。
例如:If you want to go, please let me know.If the green light isn’t on, wait for a minute.(2)“祈使句+ and (or)+ 陈述句” 在意思上相当于一个带有条件状语从句的复合句。
注意:A. “祈使句+ and + 陈述句”可以转化为if引导的肯定条件状语从句,而且主语是第二人称。
B. “祈使句+ or + 陈述句”可以转化为if引导的否定条件状语从句,而且主语是第二人称。
例如:Study hard and you will pass the exam. =If you study hard, you will pass the exam.Hurry up, or you’ll be late. =If you don’t hurry up, you’ll be late.if从句与主句具有以下特点:1.If从句中用一般现在时,表示未来的一种条件,从句中可以加时间状语。
e.g.If you can’t come tomorrow, we can hold the party a little later.明天你如果不能来,我们可迟一点举行宴会。
2017-2018年八年级英语上册 if引导的条件状语从句讲义 (新版)人教新目标版
if 引导的条件状语从句(讲义)状语用来表示行为发生的时间、地点、目的、方式、程度等,通常由副词或介词短语充当,也可由一个句子充当。
I slept at home yesterday because I had a bad cold.状语从句状语从句指句子作状语.根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式等从句.状语从句一般由连词(从属连词)引导.I will go to school by bike tomorrow if it is sunny。
Grammar focus-I think I’ll take the bus to the party.—If you do,you’ll be late。
If you take the bus to the party,you’ll be late.—I think I’ll stay at home.-If you do, you'll be sorry。
If you stay at home, you’ll besorry。
—What will happen if they have the party today?—If they have it today, half the class won’t come。
-Should we ask people to bring food?—If we ask people to bring food,they’ll just bringpotato chips and chocolate.1.if 在本单元句中意为“;”,用于引导.即 if 引导的是一个完整的句子,所以一定要有主谓,成为从句,另一个句子则成为主句。
If you go there,I’ll go, too.We will go hiking if it doesn’t rain tomorrow。
If Bob leaves tomorrow, I will hold a party for him tonight.2.if 引导的条件状语从句既可以放在主句前,也可放在主句后。
第10讲 if引导条件状语从句(人教版 八年级英语学习资料)
第10讲if 引导条件状语从句1、知晓条件状语从句结构及用法。
2、熟练掌握if引导状语从句的同义转换。
【拓展】if /when 引导状语从句和宾语从句这两种从句。
从句的时态的确定。
A.If B.And C.Be D.Or【答案】A【详解】句意:如果你不快点,你将错过公共汽车。
考查连词辨析。
if如果;and和;be是;or否则。
“you don’t hurry up”是错过公共汽车的条件,用if引导条件状语从句。
故选A。
考点2:if引导条件状语从句时态的确定1.—Would you like to go fishing with me this Sunday?—If it ________, I will go.A.doesn’t rain B.rains C.won’t rain D.didn’t rain【答案】A【详解】句意:——这个星期天你愿意和我一起去钓鱼吗?——如果不下雨,我就去。
考查时态。
if引导的条件状语从句,从句中用一般将来时,主句中用一般现在时,根据“If it..., I will go.”可知,此处表达“不下雨”。
故选A。
2.—What are you going to do this weekend?—We’ll go to have a picnic if it ________.A.rains B.is raining C.doesn’t rain D.won’t rain【答案】C【详解】句意:——这个周末你打算做什么?——如果不下雨,我们将去野餐。
考查条件状语从句。
rains第三人称单数形式;is raining现在进行时;doesn’t rain不下雨,一般现在时态;won’t rain一般将来时。
if引导的条件状语从句,主句一般将来时态,从句一般现在时态。
选项B、D不正确。
根据“We’ll go to have a picnic”可知,从句应该是“如果不下雨”,用否定形式doesn’t rain。
八年级上册if引导的条件句
八年级上册if引导的条件句
以下是有关八年级上册if引导的条件句的总结:
1. 如果主句用一般将来时,if从句要用一般现在时代替将来时。
2. 在含有条件状语从句的复合句中,如果主句描述将来动作,一般将来时态不变,只是把if引导的条件状语从句用“主将从现”的规则变为时间状语从句。
3. 如果if引导的条件状语从句中的主语与主句主语一致或是人称代词主格,且从句谓语为系动词be时,可以省略从句的主语和系动词be。
4. 如果if引导的条件状语从句中有助动词had, could, would, should 等时,可以省略连词if,直接使用倒装语序表示条件。
请注意,以上规则可能因教材和教师的要求而有所不同。
在学习和练习使用if引导的条件句时,建议参考教材和教师的指导。
if引导的条件状语从句的用法
(3)假设
真的,或者有可能成为真的;
(二)假设将来,假设的条
将来
件是将来可能实现的。
1. if 非真实条件句(虚拟)——假设现在
(二)遵循的原则
should do
might+do
例 7 If I _____(be) a bird,I would fly to you right
状态,是正在玩球的意思,
所以此空填 is playing。
3. if 引导的真实条件状语从句——假设将来
例 3 If it _____(rain) tomorrow,we will stay at home.
解析:如果你不想受伤,
就不要玩刀。根据 Don’
t
play with the knife,主句是祈使句,所以从句为 if 引导
to the park.
he will take me to the park,主句用的一般将来时,而且
可以分析出,他哥哥现在还没有回,所以从句为 if 引
导的表将来的条件状语从句。根据“主将从现”的原
则,此空填 comes。
2. if 非真实条件句(虚拟)——假设过去
例8
Years ago if someone_____ (turn) round to
批改学生作文时,遇到拼写错误较多的学生可以这样
及各个时代相关代表作品的赏析,感受中西方文化的
评价:
不同,提高其审美水平;在进行人教版(2014)高中英
neat and tidy!
学生参观学校的科学实验室或者本地的科技馆,感受
1. 认 同 欣 赏:I like your handwriting,which is so
英语教材解读人教八年级上册if引导的条件状语从句
• ② If there is no water, fish can‟t live. → Fish can‟t live without water. 离开水,鱼不能 生存。
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。
状语从句
If引导的条件状语从句
什么是状语?
•He speaks English very well.
主语 谓语 宾语
状语
状语
•用来修饰动词,形容词,副词以 及全句的句子成分,叫做状语。 •状语通常是副词,介词短语,不 定式和从句等。
状语用来修饰动词、形容词或副词。它表示行为发生 的时间、地点、目的、方式、程度等,一般由副词、 介词短语、不定式,从句或相当于副词的词或短语来 充当。状语一般放在句末,但有时也可以放在句首、 句中。如:
• [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)当主句是祈 使句时;(3)当主句含有情态动词时,if引导的条件状语从句通常用一般 现在时。如:
• If she doesn’t come, she will be sorry. 如果她不来,她会遗憾的。
• Have a good rest if you are tired. 如果累了,你就好好休息一下。
my parents ________( feweil)l fgelaedl . 3.He _w_i_ll_w__ri_te(write) a letter to his grandparents if he ___g_e(tgset) his report card this week. 4. If she__g_e_t_s(get) up late, she ____w__il_l _n_o_t_c_a_tc(hnot
英语人教版八年级上册if条件状语从句
if条件状语从句---用法
(2 ) If it stops snowing, we can go out. If you love your parents, you should help them do the housework. If you want to lose weight, you must eat less junk food.
A. can pass, will work C. passes, will work 答案:D
B. will pass, will work D. can pass, works
翻译:如果明天天晴,他可能会去看望他的叔叔。
If it is sunny tomorrow, he may visit his uncle.
英语 人教版 八(上)
Unit 10 If 条件状语从句
if条件状语从句---概念
连词 if 意为“如果”,它引导的句子表
示某事发生所需要的条件,即“在...... 条件下某事才能发生”,在句子中充 当状语,因此我们称之为 条件状语从 句。
if条件状语从句---结构
结构: if+ 陈述句,主语 + 谓语(或者主语 + 谓语 +if+ 陈述句),意为“如果... 就...”。 在复合句中,连词if引导的句子为从句,被 修饰的句子为主句。
从句可以放在主句前,用逗号与主句隔开; 从句也可直接置于主句后。 If I get up at 9:00, I will be late.
如果我早上九点起床,我将会迟到。
I will be late if I get up at 9:00.
人教版八年级英语状语从句与非谓语动词单选题35题
人教版八年级英语状语从句与非谓语动词单选题35题1.She will go shopping if she ______ time this afternoon.A.hasB.hadC.will haveD.would have答案解析:A。
if 引导的条件状语从句,遵循“主将从现”原则,主句用一般将来时,从句用一般现在时。
B 选项是过去式,C 选项是将来时,D 选项是过去将来时,均不符合要求。
2.We will stay at home ______ it rains tomorrow.A.ifB.unlessC.whenD.although答案解析:A。
if 表示如果,引导条件状语从句。
unless 表示除非,when 表示当……时候,although 表示虽然,在此语境中如果明天下雨我们就待在家,if 最合适。
3.______ you study hard, you will pass the exam.A.IfB.UnlessC.WhenD.Although答案解析:A。
if 引导条件状语从句,如果你努力学习,你就会通过考试。
unless 表示除非,意思不符。
when 当……时候,although 虽然,均不合适。
4.I will go to the park ______ it is sunny tomorrow.A.ifB.unlessC.whenD.because答案解析:A。
if 表示如果,引导条件状语从句。
如果明天天晴我就去公园。
unless 除非,when 当……时候,because 因为,都不符合语境。
5.______ he is tired, he still works hard.A.AlthoughB.IfC.UnlessD.When答案解析:A。
although 表示虽然,引导让步状语从句。
虽然他很累,但他仍然努力工作。
if 如果,unless 除非,when 当……时候,都不合适。
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if引导的条件状语从句教学
Teaching aims:
Understand and know how to use the conditional clause.
Teaching aids: pictures, computer, and little blackboard.
Teaching procedures:
Step 1 warming up:
1.Play a song called“If you are happy, clap your ha nds.” And then the teacher sings the song
with the students together.
2.Talk freely:
There is a cat called Dudu.It is cute but lovely. It is unhappy, too. I think it may have some problems. Do you know the problems? If you are its owner, what will you do?
3.Collect information:
Write some sentences about “if” on the blackboard.
①If you copy homework, you will start a bad habit.
②She will be happy if she joins the party.
③I will ask the teacher for help if I don’t understand.
④If it’s fine tomorrow, we can go out.
⑤Please call me if he is at home.
⑥If you don’t hurry up, we will be late.
⑦If you study hard, you will pass the exam.
Step 2 Discuss and summarize:
学生得出结论:
①if意为“如果”,这种句子用来谈论事物的影响或者是后果。
②从句用一般现在时,主句用一般将来时。
③从句可放在主句前或主句后,从句位于主句前时必须要用逗号与主句隔开,反之则不用
逗号。
注意:(教师补充)
学习" if " 引导的条件状语从句的用法,现在总结一下:
if 条件句不一般,几个要点记心间;
条件句,放在前, 逗号要放句中间。
条件句表真实,主将从现要遵从;
条件句非真实,虚拟语气用到位。
If we pay much attention to the earth, we'll have a better world. 如果我们多关爱地球,就会拥有一个更美好的世界。
If it rains tomorrow, what shall we do? 如果明天下雨,我们怎么办?
What would happen if there were no water? 如果没有水会怎样?
Step 3 Presentation
What will you do if......
If you don’t want to be late for school, .
If you want to get good marks, .
If you break the cups, .
Step 4 Exercising
Ⅰ.单项选择
()1.If you _____ to the party, you’ll have a great time.
A. will go
B. went
C. go
D. going
()2. I ____ her the answer if she ____me.
A. can tell, will ask
B. will tell, will ask
C. would tell, ask
D. will tell, asks
()3. – What are you going to do tomorrow?
--We’ll go to the library tomorrow if it ___.
A. isn’t rain
B. rain
C. won’t rain
D. doesn’t rain
()4. What will you do if you _____ to the old folk’s home?
A. go
B. went
C. going
D. will go
()5.I’ll give the book to him if he ___ here next Sunday.
A. will come
B. comes
C. is coming
D. came
Ⅱ.用所给词的适当形式填空
1. If you ________ (feel) tired, you _______________ (have) to have a rest.
2. Where _______ he _________ (see) the film if he ________________ (have) time?
3. If there __________ (be) fewer trees, there _______________ (be) more pollution.
4. If Marcia _____________ (live) alone, she ___________________ (keep) a pet parrot.
5. Lana ________________ (buy) a new dress if the old one ____________ (be) out of style.
6. The twins ______________ (fight) if they_______________ (argue).
7. I ____________ (have) a bake sale if I _____________ (need) money for education.
8. Peter _____________ (send) me a beautiful souvenir if he ________________ (tour) Spain.
9. I ____________ (go) to the beach if it________________ (not rain) this week.
10. __________they __________ (have) a match if the P.E. teacher _____________ (be) busy?
11. If she ____________ (get) up late, she _____________ (not catch) the early bus.
Ⅲ.翻译下列句子
1.如果他到的晚了会发生什么事情?
What _______________ if he _____________ late?
2. 如果努力学习,你就会取得好成绩。
If you__________ _________, you good marks.
3. 他如果看电视太久了,他的父母会不高兴。
If he _________ TV too much, his parents __________ __________ unhappy.
4. 如果我们为他组织生日聚会,大家都会来的。
Everyone ________________ if we _____________ a birthday party __________ him.
5. 如果明天不下雨,我会和你一起去公园的。
If it __________ __________ tomorrow, I ______________ go to the park _________ you.
6. 如果她睡过头了,就会旅游迟到的。
She __________________________ the trip if she ___________________.
7. 如果他有空,他会帮助你的。
If he _________________, he _________________ you.。