新概念二Lesson16if条件状语从句PPT课件
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If I get up at 7:00, I will be late.
If I am late, the teacher will be angry with me.
If the teacher is angry with me, I will be sad.
If you get up late, you will be late for school.
句用_一__般_现__在__时___。 “主情从现”
例如：You must stop if the traffic light __is__ (be) red.
If you feel hungry, you should eat something.
If you feel tired, you must have a rest.
if
will
she, call me, I, tell her about it
If she calls me, I will tell her about it.
he ,come, next weekend, I ,tell you If he comes next weekend, I will tell you.
①
②
if 从句
主句
由if引导的从句叫条件状语从句，if意思为“如果”。
含if条件状语从句的主从复合句
1. if 条件状语从句中，主句用一般将来 时，if从句用_一__般__现__在__时__表示将来, 主__将__从__现__原则。
例如：We will go to the park if it _d_o_e_s_n_’t_ __r_a_i_n_ (rain) tomorrow.
2. If it __is__ (be) cold tomorrow, I will wear my sweater.
3. He can go home if he _fi_n_is_h_e_s__ (finish) his homework.
*If you are happy, what will you do?
If you are ill, you must go to see a doctor.
If you are riding a bike , you must be careful.
• Call me if Tina comes. • Have a good rest if you are tired.
She is going to walk to school.
She will be late.
If she _w_a_lk_s_ to school, she _w__i_l_l b__e_late.
If I have much money, I will buy a big house.
buy lots of delicious food. travel all over the world.
3. if 条件状语从句中，主句可以是祈 使句，从句用_一__般__现__在__时___表示将来。
_主__祈__从__现__原则。
例如：Don’ t wait for me if I _a_m___ (be) late.
1. Put up your hands if you __h_a_v_e (have) any questions.
he,have free time, go to Shanghai ,
If he has free time, he will go to Shanghai.
she, study hard, she, get good grades
It is going to rain tomorrow. I will stay at home.
If it _ra_i_n_s_ tomorrow, I __w_il_l_ _s_t_a_y_ at home.
It will be sunny tomorrow.
They will have a trip tomorrow.
If I have a lot of money , I will buy a car. If I buy a car , I will travel everywhere. If I travel everywhere, I will be happy. If I am happy, I will be healthy.
If I am happy, I will smile/sing.
* If you become sad, what will you do? If I become sad, I will cry. *What will happen if you do too much work? If I do too much work, I will get tired.
• She must see a dentist if she has a toothache.
• You can go shopping with your sister if you have time this afternoon.
2. if 条件状语从句中，主句可以是 must，can，may 等情态动词，if从
If it _i_s__ sunny tomorrow, they _w__il_l_ _h_a_v_e__ a trip.
He won’t study hard.
Biblioteka Baidu
He will fail in the exam.
“If he _do_e_s_n’_t study hard. He _w_i_ll __fa_il_ in the exam.”
not rain , go hiking ,this afternoon
If it doesn’t rain, I will go hiking this afternoon.
it, be sunny, she, fly a kite
If it is sunny, she will fly a kite.
If I am late, the teacher will be angry with me.
If the teacher is angry with me, I will be sad.
If you get up late, you will be late for school.
句用_一__般_现__在__时___。 “主情从现”
例如：You must stop if the traffic light __is__ (be) red.
If you feel hungry, you should eat something.
If you feel tired, you must have a rest.
if
will
she, call me, I, tell her about it
If she calls me, I will tell her about it.
he ,come, next weekend, I ,tell you If he comes next weekend, I will tell you.
①
②
if 从句
主句
由if引导的从句叫条件状语从句，if意思为“如果”。
含if条件状语从句的主从复合句
1. if 条件状语从句中，主句用一般将来 时，if从句用_一__般__现__在__时__表示将来, 主__将__从__现__原则。
例如：We will go to the park if it _d_o_e_s_n_’t_ __r_a_i_n_ (rain) tomorrow.
2. If it __is__ (be) cold tomorrow, I will wear my sweater.
3. He can go home if he _fi_n_is_h_e_s__ (finish) his homework.
*If you are happy, what will you do?
If you are ill, you must go to see a doctor.
If you are riding a bike , you must be careful.
• Call me if Tina comes. • Have a good rest if you are tired.
She is going to walk to school.
She will be late.
If she _w_a_lk_s_ to school, she _w__i_l_l b__e_late.
If I have much money, I will buy a big house.
buy lots of delicious food. travel all over the world.
3. if 条件状语从句中，主句可以是祈 使句，从句用_一__般__现__在__时___表示将来。
_主__祈__从__现__原则。
例如：Don’ t wait for me if I _a_m___ (be) late.
1. Put up your hands if you __h_a_v_e (have) any questions.
he,have free time, go to Shanghai ,
If he has free time, he will go to Shanghai.
she, study hard, she, get good grades
It is going to rain tomorrow. I will stay at home.
If it _ra_i_n_s_ tomorrow, I __w_il_l_ _s_t_a_y_ at home.
It will be sunny tomorrow.
They will have a trip tomorrow.
If I have a lot of money , I will buy a car. If I buy a car , I will travel everywhere. If I travel everywhere, I will be happy. If I am happy, I will be healthy.
If I am happy, I will smile/sing.
* If you become sad, what will you do? If I become sad, I will cry. *What will happen if you do too much work? If I do too much work, I will get tired.
• She must see a dentist if she has a toothache.
• You can go shopping with your sister if you have time this afternoon.
2. if 条件状语从句中，主句可以是 must，can，may 等情态动词，if从
If it _i_s__ sunny tomorrow, they _w__il_l_ _h_a_v_e__ a trip.
He won’t study hard.
Biblioteka Baidu
He will fail in the exam.
“If he _do_e_s_n’_t study hard. He _w_i_ll __fa_il_ in the exam.”
not rain , go hiking ,this afternoon
If it doesn’t rain, I will go hiking this afternoon.
it, be sunny, she, fly a kite
If it is sunny, she will fly a kite.