高二英语中级提升班讲座--状语从句

1、状语从句,高二英语中级提升班讲座,分 类,时间状语从句 地点状语从句 原因状语从句 目的状语从句 结果状语从句 条件状语从句 方式状语从句 让步状语从句 比较状语从句,一.就,到.程度,尽管,as if/though的用法,一、明确as if/though引导的句式结构 1.as if/though引导表语从句 look seem feel taste smell sound It looks/seems as if they are looking for something. I couldnt move my leg. It was as if they had been struck

2、in the floor.,+as if/though,2.as if/though引导方式状语从句 You answered the question as if you didnt know this rule. The strangers talked as if they had been friends. 二、掌握as if/though引导从句的语气 1.陈述语气 He is a happy-go-lucky man as if he has no worries cares in the world. 2.虚拟语气 （1）与现在事实相反 If a pencil is partly

3、 in a glass of water,it looks as if it were broken. He behaves as if he owned the house.,(2)与过去事实相反 He talks about Rome as if he had been there himself. (3)与将来事实相反 would/could/might Mary is crying as if her heart would be broken. 三、注意as if/though引导从句的意思差别 The boss speaks aloud as if he is angry.真生气

4、The boss speaks aloud as if he were angry.好像生气,四、注意as if/though引导方式状语从句的省略形式（主语一致） He shook his hand as if to say Dont trust her. He stared at Jim as if seeing him for the first time. Jim rolled on the ground as if hurt badly in the leg. Jim acts as if a fool. Jim acts as if he were a fool. He lay s

5、till for a long while as if dead. Jim acts as if unable to keep his balance.形容词短语 Jim made that remark as if absent-mindedly. Jim opened the door as if in search of something.,when ,while , as用法,1.若主句是短暂性动作，从句是持续性动作，三者皆可。 He fell asleep when/while/as he was reading. 2. 若从句是短暂性动作，主句持续性动作，可用as / when，

6、不用while。 It was raining hard as/when we arrived. 3. 若主从句表示的是两个同时（几乎同时）发生的短暂性动作，用as/when, 不用while。 I thought of it just when/as you opened your mouth. 4. 若表示两个正在发展变化的情况，相当于“随着”“一边一边”。用as Things are getting better and better as time goes on. As it grew darker, it became colder.,5. 若主从句表示的动作不是同时发生的，而是有

7、先后顺序的，一般用when。 Ill go home when he comes back. 6. when 并列连词：表“就在那时”，“突然间” while 并列连词：表“而、却”对比。但as没有类似用法。 He likes coffee , while she likes tea. We were about to start when it began to rain. 7. 用于句首，引导让步状语从句：while While I admit that it is difficult , it can be done.,because, since, as, for的用法,1.becau

8、se引导原因状语从句时语气最强，表示直接原因，用于回答why提出的问题，可引导表语从句，还可用于强调句。 Why didnt he come? Because he was ill. Thats because you cant appreciate music. It is because he is honest that I liked him. 2. as 所表示的语气比较弱，不表示直接原因。 3. Since表示显而易见的、众所周知的原因，语气比as强，更正式。since引导的从句通常放在主句之前，as引导的可以在主句前或后。since可用于省略句 Since so， I have nothing to say.,3. for表示补充说明的原因，属于并列连