Unit6-条件状语从句讲练结合 2023-2024学年人教版八年级英语下册

条件状语从句 知识提炼 一、连接词:if/unless/ as long as(只要) If 意为“如果”,unless意为“除非”相当于if not 二、时态:主将从现、主情从现、主祈从现 e.g. (1) If people obey the traffic rules, there will be fewer accidents. 主将从现 (2) If we break the traffic rules, we may get a fine. 主情从现 (3) What shall we do if it snows tomorrow? 主将从现 (4) Don’t leave the building unless I tell you to. 主祈从现 (5) He won’t be late unless he is ill. 主将从现 三、注:if 译为“是否”时引导宾语从句 时态区分时态(if引导宾语从句): 主现从随 ①I don’t know what the teacher said yesterday. ②I think that you can ask teacher for help. ③I believe that you will pass the exam. 主过从过 My mother asked me what the result was. 真理永现 My teacher told us that the earth moves around the sun. 四、在so和neither的倒装句中的使用 Eg: If you don’t go to school, neither will I. (主将从现) 小牛试刀 单项选择 ( ) 1. -Do you know when he will come back tomorrow? -Sorry, I don't know. When he _ back, I'll tell you. A. comes B. will come C. come D. may come ( ) 2. Mary will go to Sanya if she _ a five-day-trip. A. have B. had C. will have D. has ( ) 3. What will you do if you _ to the party without invitation? A. go B. went C. going D. will go ( ) 4. If I eat too much food, I _ too fat. A. am B. was C. will D. will be ( ) 5. I'll give the book to him if he _ here next Sunday. A. will come B. comes C. is coming D. came 答案:ADADB 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. Lana _ (buy) a new dress if the old one _ (be) out of style. 7. The twins _ (fight) if they_ (argue). 8. I _ (have) a bake sale if I _ (need) money for education. 9. Peter _ (send) me a beautiful souvenir if he _ (go) to Spain. 10. If Mr. Green _ (say) I am hard- working, my parents _ (feel) glad. 11. I _ (go) to the beach if it _ (not rain) this week. 12. _they _ (have) a match if the P.E. teacher_ (be) not busy? 13. He _