條件狀語從句PPT課件27908.ppt

期中備考之 狀語從句復(fù)習(xí),Contents,回顧九種常用的狀語從句,歷年中考考題中狀語從句分析,天津市考試說明中的考試目標(biāo)（狀語從句部分）,條件狀語,原因狀語,目的狀語,地點(diǎn)狀語,比較狀語,結(jié)果狀語,時間狀語,讓步狀語,方式狀語,Back to school,難點(diǎn),狀語從句的時態(tài)問題;,難點(diǎn),?？键c(diǎn),時間狀語從句,各種從屬連詞的含義及用法比較；,狀語從句的時態(tài)問題;,各種從屬連詞的含義及用法比較；,時間狀語從句,狀語從句的時態(tài)問題;,各種從屬連詞的含義及用法比較；,狀語從句的時態(tài)問題;,各種從屬連詞的含義及用法比較；,時間狀語從句, 讓步狀語從句， 條件狀語從句,狀語從句的時態(tài)問題;,各種從屬連詞的含義及用法比較；,引導(dǎo)條件狀語從句的連接詞主要有：if(如果)、unless(除非)或 as long as(只要)等。unless在意思上等于if.not。,條件狀語從句,1、引導(dǎo)條件狀語從句最常用的連詞是if,由if引導(dǎo)的條件狀語從句表示在某種條件下某事很可能發(fā)生。 If you ask him, he will help you. 如果你請他幫忙,他會幫你的。 If you fail in the exam, you will let him down. 如果你考試不及格,你會讓他失望的。,條件狀語從句,2、unless = if.not. 除非,若不, Lets go out for a walk unless you are too tired. =If you are not too tired, lets go out for a walk. Unless it rains, the game will be played.除非下雨,比賽將照常進(jìn)行。,條件狀語從句,3、so/as long as只要 You may borrow my book as long as you keep it clean. 只要你保持書的清 潔，你就可以把我的書借去。 So long as youre happy, it doesnt matter what you do. 只要你高興，你做什么都沒有關(guān)系。,條件狀語從句,二、時態(tài)問題 在條件狀語從句中，要注意“主將從現(xiàn)“的規(guī)定，即主句用一般將來時，從句用一般現(xiàn)在時表示將來時。 I will come to see you if I have time. 我有時間，我就來看你。 常見考法 對于條件狀語從句的考查，多以單選和完形填空的形式，從時態(tài)的角度設(shè)題，考查學(xué)生靈活運(yùn)用的能力，或從連詞的意義角度讓大家選擇連詞。,條件狀語從句,典型例題： If he _in half an hour, we _wait for him. A. wont come ,wont B. wont come ,dont C. doesnt come ,wont D. will come ,dont 解析：本題考查條件狀語從句“主將從現(xiàn)“的運(yùn)用。題干的意思是“如果他一小時后不來，我們將不會等他了“，從“in half an hour“，“一小時后“可知本句說的是未來的事，那么if引導(dǎo)的條件狀語從句要用一般現(xiàn)在時表示將來時，主句要用一般將來時。 答案：C,條件狀語從句,1. If it _tomorrow, we _ to climb mountains. A. doesnt rain; go B. wont rain; will go C. wont rain; go D. doesnt rain; will go 2Do you know if _ tomorrow morning? No. I will call you if she _ back. A. she will come; comes B. she comes; will come C. will she come; comes D. will she come; will come,條件狀語從句,3Well go to the park if it_ rain tomorrow. A. dont B. doesnt C. wont 4We are not sure if it _ tomorrow. If it _ , our sports meeting will be put off. A. rains; rains B. rains; will rain C. will rain; will rain D. will rain; rains,條件狀語從句,誤區(qū)提醒 if 既可以引導(dǎo)條件狀語從 句，表示“如果“，也可以引導(dǎo)賓語從句，表達(dá)“是否“。辨別它在這兩種從句中的時態(tài)是我們經(jīng)常容易出錯的地方。另外，if 和unless的用法也需注意,條件狀語從句,5. Ill give the book to him as long as he _ here next Sunday. A. will come B. comes C. is coming D. came 6.You will not get good grades _ you work hard. A. and B. unless C. if D.as long as,條件狀語從句,40. Will you please give the dictionary to Jane? Sure, Ill give it to her _ she arrives here. A. before B. until C. because D. as soon as,37. A snake bit him _ he went to see a doctor at once. A. if B. where C. because D. so,28. You will be late for school_ you dont get up early. A. but B. if C. and D. or,34. It was raining heavily, _ we decided to stay at home and