秘笈07 状语从句 考点 1 状语从句 考向1 时间状语从句 从属连词 用法 例句 While "与……同时,在……期间",从句常用延续性动词或表示状态的词 Don’t talk loud while(as)others are working. 别人工作时,请勿大声说话。 When "当……时",表示主句的动作和从句的动作同时或先后发生,从句的动词可用延续性动词,也可用非延续性动词 It was raining when we arrived. 我们到达时,天正下着雨。 when you read the poem a second time, the meaning will become clearer to you. 当你再读一遍这首诗,你就会更清楚它的含义。 As "正当,一边……一边,随着",表示两个动作同时发生或某事发生时,另一个动作发生了 As time went on, his theory proved to be correct. 随着时间的推移,他的理论被证明是正确的。 Till/Until 用于肯定句时,表示"直到……为止",主句必须为延续性动词;not...until/till表示"直到……才",主句常用短暂性动词 We shall wait until/till he comes back. 我们将一直等到他回来。 I didn’t leave until/till she finished her homework. 直到她完成作业我才离开。 Since "自……以来",主句用一般现在时或现在完成时,从句用一般过去时 I have heard lot of good things about you since I come back from abroad. 自从我从国外回来,我已经听许多好的事情。 Before 在……以前 He must finish all the work before he goes home. 回家之前他必须完成所有的工作。 After 在……之后 Let’s play football after school. 放学后我们打篮球吧。 【知识拓展】 时间状语从句的时态问题:在时间状语从句和条件状语从句中,主句如果使用一般将来时态,从句使用一般现在时表示将来,即所谓的"主将从现"。 As soon as I arrive in Beijing, I will ring you up. 我一到北京就给你打电话。 You’ll fall behind the others unless you study hard. 如果你不努力学****你将会落后于其他人。 2. when,while,as引导时间状语从句的区别 when,while,as显然都可以引导时间状语从句,但用法区别非常大。 ① when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用。 Why do you want a new job when you’ve got such a good one already? 你已经找到如此好的工作,为何还想再找新的? (get为短暂性动词) Sorry, I was out when you called me. 对不起,你打电话时我刚好外出了。 (call为短暂性动词) Strike while the iron is hot. 趁热打铁。 (is为延续性动词,表示一种持续的状态) The students took notes as they listened. 学生们边听课边做笔记。 (listen为延续性动词) ② when从句的谓语动词可以在主句谓语动作之前、之后或同时发生;while和as从句的谓语动作必须是和主句谓语动作同时发生。 a. 从句动作在主句动作前发生,只用 when。 When he had finished his homework, he took a short rest. (finished先发生) 当他完成作业后,他休息了一会儿。 When I got to the airport, the guests had left. (got to后发生) 当我赶到飞机场时,客人们已经离开了。 b. 从句动作和主句动作同时发生,且从句动作为延续性动词时,when,while,as都可使用。 ①When / While / As we were dancing, a s