必修四module3grammar.ppt

1、Grammar,Adverbial clause of condition,状语从句 （Adverbial Clause）： 指句子用作状语时，起副词作用的句子。它可以修饰动词，形容词，副词或整个句子。根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句。状语从句一般由连词(从属连词)引导，也可以由词组引起。从句位于句首或句中时通常用逗号与主句隔开，位于句尾时可以不用逗号隔开。,常用的引导条件状语从句的从属连词有： if/provided that, unless (=ifnot), as/so long as, in case, on condition that, s

2、uppose/supposing,Adverbial Clauses of Condition I. if/provided that 1)If you work harder, you will succeed. 2)Provided that you work harder, you will succeed.,Work harder, and you will succeed.,Work harder, or you wont succeed.,II. Unless（if not） You wont succeed unless you work harder.,=If you dont

3、 work hard, you wont succeed.,*III. as long as(只要 ) 只要我还活着，我将不会放弃学习。 I will never give up learning as long as I am alive.,*IV. on condition that（条件是） 我们将会让你使用这个房间条件是是你要打扫它 Well let you use the room on condition that you clean it.,*V. in case (万一） 你最好带上雨伞以防下雨。 Youd better take your raincoat with you

4、in case it rains.,Summary 问题1： 1、The WTO cannot live up to its name _ it does not include a country that is home to one fifth of mankind. Aas long as BwhileCif Deven though 2、 It is known to all that _ you exercise regularly, you wont keep good health. A. unless B. whenever C. although D. if,C,A,unl

5、ess 相当于 if not，意思是“除非”“如果不就”。这也是高考的热点之一。复习时也应给予高度重视。,问题2： 1、_ I can see, there is only one possible way to keep away from the danger. （04北京春季） A. As long as B. As far as C. Just as D. Even if 2、I always take something to read when I go to the doctors _ I have to wait. （05全国卷3） Ain case Bso that Cin orderDas if,B,A,as long as 与 as far as 都可引导条件状语从句，as long as 表示“只要”，as far