外研八下Module-5-if-用法

1、2021/8/21If 引導的條件狀語從句的復習引導的條件狀語從句的復習1 If I _(not understand）, I will ask my teacher for help . If I _(copy ) your homework , I will cheat myself . 3 If she _(not get ) up early , shell miss the early bus .2 4 If your mother_ (buy) the book for you , it will be good for your study. dont understand co

2、py doesnt get buys2021/8/225. If you _(not work ) hard , you _(not pass) the exam.6. If she _(mend) the computer , her father _(not blame ).7. If your brother _(break) the window , he will feel very sorry for that .8. If the computer (not work), mend it please .dont workwill not mendswill not breaks

3、doesnt work2021/8/23找出下列句子中哪些是找出下列句子中哪些是if條件狀語從句，條件狀語從句，哪些是哪些是if賓語從句賓語從句1. Can you tell me if she can come to the meeting ?2. She will not go there , if it is rainy tomorrow.3. I cant guess if she will be angry .4. If we help each other , we both will get good results . ，2021/8/24if 引導的條件狀語從句和引導的條件狀

4、語從句和if 引導的引導的賓語從句的區(qū)分賓語從句的區(qū)分:If 在賓語從句中翻譯為在賓語從句中翻譯為“是否是否”If 在條件狀語從句中翻譯為在條件狀語從句中翻譯為“如果如果”Ill go to see you if I am free next week. I want to know if he is a teacher.whether1. if 在句中的含義不同在句中的含義不同2021/8/252. if 在從句中的位置不同在從句中的位置不同If 引導的賓語從句放在主句之后；而引導的賓語從句放在主句之后；而if引導的狀語從句可放在主句之前也可放引導的狀語從句可放在主句之前也可放在主句之后在主

5、句之后= If it doesnt rain, I will go out tomorrow.I will go out tomorrow if it doesnt rain.I dont know if the train has arrived.2021/8/263. 時態(tài)的區(qū)別時態(tài)的區(qū)別If 引導的賓語從句的時態(tài)由主句時態(tài)定；引導的賓語從句的時態(tài)由主句時態(tài)定；If 引導條件狀語從句的時態(tài)為一般現(xiàn)在時，引導條件狀語從句的時態(tài)為一般現(xiàn)在時， 主句為一般將來時主句為一般將來時 - “主將從現(xiàn)主將從現(xiàn)” I want to know if there a sports meeting next

6、month.If it , well hold it.doesnt rainwill be2021/8/274. 標點不同標點不同 If 引導的條件狀語從句放于句首時多用引導的條件狀語從句放于句首時多用逗號隔開；逗號隔開； 而而if引導的賓語從句則不能。引導的賓語從句則不能。2021/8/281. If she _(not be) interested in math, she will find it very boring .2. If you _(get ) high scores, your parents will be proud of you .3. If you _(be) happy , we will be happy .4. If she (translate ) the sentence word by word