初中英语：If引导的条件状语从句.ppt

if:从属连词，意思是：“如果，假如，倘若” 结构： 在 if 引导的条件状语从句中，if 和条件句位置灵活，可直接放在主句后面;若 if 条件句放句首， 从句后面要加逗号，和主句隔开。 例句： If you go to the party, you will have a good time. →从句 →主句 You will have a good time if you go to the party. 原句可改为： →从句 →主句 时态： if引导的条件状语从句: 主句用一般将来时（will）,从句用一般现在时。 在正确的答案下划一条线。 1.Daina ( will go/go/goes) to Europe if she (will pass/pass/passes) the exams . 2.If there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at once. 3. If it (won’t/don’t/doesn’t/ isn’t) rainy, we (will take/ take/takes) walk outside. 4. If he (will have/have/has) money, he (will bulid/build/builds) a science lab. 5.Don’t wait for me if I (am/ will be) late. 6. I (will call/ call) you if he (will stay/stay /stays) at home. 7. Where (will/ do/does) they live if they (will miss/ miss/ misses) the bus? 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. He _____________(dress)? more casually if he ________________( not work) on weekends. 5. If Marcia _____________(live) alone, she ___________________( keep) a pet parrot. 6. 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. 7. 如果她睡过头了，就会旅游迟到的。 ?She__________________________ the trip if she ___________________. 8. 如果他有空，他会帮助你的。 If he _________________, he _________________? you. 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。 条件句表可能，主句多用将来时； 条件句表事实，主句常用现在时。