条件状语从句完整ppt课件
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含情态动词的 祈使句
.
unless 除非,非……不可, 表强烈的否定
You will fail unless you work harder . 你不努力就会失败的。
Don’t come unless I call you . 我不叫你就别来 注意: unless表示否定,从句的谓语要用肯定式
误 : Unless you don’t work hard ,you will fail . 正 ：Unless you work hard ,you will fail . 正 ：If you don’t work hard ,you will fail .
tomorrow.
如果你去， 我也去。 If you go,I will go.
如果明天下雨，请带雨衣。
Please take a raincoat if it rains.
.
1. If (如果……) 引导的条件状语从句, 主句用
一般将来时,从句用一般现在时.（主将从现）
I won’t go by plane if it rains tomorrow. If you don’t hurry , you’ll miss the train. 注意:从句放在主句之前或主句之后.如放在
.
If it is… What will they do this weekend?
If it is cloudy this weekend, they will go fishing
If it is sunny this weekend. , they will play volleyball.
.
If he always w__a_tc_h__e_s_T_V_ (watch TV ), he_w_i_ll_b_e__b_o_r_e_d_ (bored).
.
in the future
make a lot of money buy a big house
If I make a lot of money, I will buy a big house.
Mike一来就会告诉你。 .
no war, the world, more beautiful, If there is no war, the world will be more beautiful.
she, not exercise enough, heavier If she doesn’t exercise enough,
.
If I have enough money, I will travel around the world.
.
If I study hard, I will go to college.
学剑 桥 大
.
.
if 引导的条件状语从句 时态－－主将从现
主句一般将来时，从句一般现在时
例句１ 如果你努力工作，你的梦想将会实现． If you work hard, your dream will come true.
例句２ 如果明天下雨，我将不出去散步． If it rains tomorrow,
I won’t go out for a walk.
.
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。
If he _g_o_e_s__(go) to the movies,he won’t finish his work. If I _b_e_c_o_m__e_(become) a doctor,I can help others. If we __h_a_v_e__(have )time, we will go to the park
she will be heavier. 1.主将从现 .
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 .
2.主句含有情态动词
If you are sad , please talk with us . If you are hungry , please eat some food . Please call me if he comes next Sunday.
3.主句是祈使句
.
结论:
If 引导的条件状语从句中: 从句用一般现在时态; 主句有三种情况 一般将来时态
If you play computer games all day.
• you _w_i_ll_b_e__t_ir_e_d_. (tired) •your eyes _w_il_l _b_e_h_u_r_t. (hurt) •your parents __w_il_l _n_o_t _b_e_h_a_p_p_y__. (be not happy)
.ห้องสมุดไป่ตู้
Dear Jenny,
❖ Correct and Write
Thanks for inviting me to the party. Of course
I’ll go to the party. And I think if I will give you a ①
You’ll get good grades if you study hard. “主将从现”不仅在if条件句,也用在其它时间状从: （1）until引导的时间状语从句
The bus won’t start until everybody gets on .
公共汽车直到每人都上车为止，才开动。
（2）as soon as （一…就）引导的时间状语 Mike will tell you as soon as he comes .
主句之前,要用逗号与主句隔开.
If引导的宾语从句,常译为是否,应注意时态变化. I don’t know if he will come tomorrow.
.
If 后紧跟的句子叫从句,另一个句子叫主句, 主句和从句次序可以互相调换。 If you study hard, you’ll get good grades.
.
unless 除非,非……不可, 表强烈的否定
You will fail unless you work harder . 你不努力就会失败的。
Don’t come unless I call you . 我不叫你就别来 注意: unless表示否定,从句的谓语要用肯定式
误 : Unless you don’t work hard ,you will fail . 正 ：Unless you work hard ,you will fail . 正 ：If you don’t work hard ,you will fail .
tomorrow.
如果你去， 我也去。 If you go,I will go.
如果明天下雨，请带雨衣。
Please take a raincoat if it rains.
.
1. If (如果……) 引导的条件状语从句, 主句用
一般将来时,从句用一般现在时.（主将从现）
I won’t go by plane if it rains tomorrow. If you don’t hurry , you’ll miss the train. 注意:从句放在主句之前或主句之后.如放在
.
If it is… What will they do this weekend?
If it is cloudy this weekend, they will go fishing
If it is sunny this weekend. , they will play volleyball.
.
If he always w__a_tc_h__e_s_T_V_ (watch TV ), he_w_i_ll_b_e__b_o_r_e_d_ (bored).
.
in the future
make a lot of money buy a big house
If I make a lot of money, I will buy a big house.
Mike一来就会告诉你。 .
no war, the world, more beautiful, If there is no war, the world will be more beautiful.
she, not exercise enough, heavier If she doesn’t exercise enough,
.
If I have enough money, I will travel around the world.
.
If I study hard, I will go to college.
学剑 桥 大
.
.
if 引导的条件状语从句 时态－－主将从现
主句一般将来时，从句一般现在时
例句１ 如果你努力工作，你的梦想将会实现． If you work hard, your dream will come true.
例句２ 如果明天下雨，我将不出去散步． If it rains tomorrow,
I won’t go out for a walk.
.
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。
If he _g_o_e_s__(go) to the movies,he won’t finish his work. If I _b_e_c_o_m__e_(become) a doctor,I can help others. If we __h_a_v_e__(have )time, we will go to the park
she will be heavier. 1.主将从现 .
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 .
2.主句含有情态动词
If you are sad , please talk with us . If you are hungry , please eat some food . Please call me if he comes next Sunday.
3.主句是祈使句
.
结论:
If 引导的条件状语从句中: 从句用一般现在时态; 主句有三种情况 一般将来时态
If you play computer games all day.
• you _w_i_ll_b_e__t_ir_e_d_. (tired) •your eyes _w_il_l _b_e_h_u_r_t. (hurt) •your parents __w_il_l _n_o_t _b_e_h_a_p_p_y__. (be not happy)
.ห้องสมุดไป่ตู้
Dear Jenny,
❖ Correct and Write
Thanks for inviting me to the party. Of course
I’ll go to the party. And I think if I will give you a ①
You’ll get good grades if you study hard. “主将从现”不仅在if条件句,也用在其它时间状从: （1）until引导的时间状语从句
The bus won’t start until everybody gets on .
公共汽车直到每人都上车为止，才开动。
（2）as soon as （一…就）引导的时间状语 Mike will tell you as soon as he comes .
主句之前,要用逗号与主句隔开.
If引导的宾语从句,常译为是否,应注意时态变化. I don’t know if he will come tomorrow.
.
If 后紧跟的句子叫从句,另一个句子叫主句, 主句和从句次序可以互相调换。 If you study hard, you’ll get good grades.