高一英语必修二第三课.pptVIP

[活学活用]　 （3）________ what the teacher says if you think it is important. A. Make a note of　　　 B. Make a note C. Make notes D. Make note of 答案与解析　A　句意：如果你觉得老师讲的重要，就把它记下来。make a note of＝make notes of“把……记下来”。 A since是介词，意为“自从”，后常接表示时间点的词，“since＋时间点”作状语时，句子谓语动词一般为延续性动词，且常用完成时。现将since的其他用法讲解如下： (1)conj.自……以来。用于引导时间状语从句，主句常用完成时，从句常用一般过去时。此外， since还常用于“It is/was＋一段时间＋since从句”句型。 It is three years since my father smoked. 我爸爸已经戒烟三年了。 (2)conj.既然。引导原因状语从句。 Since we have no money, we cant buy it. 因为没钱，所以我们不能买它。 (3)adv.从那以后。常与完成时连用。 He went to Beijing in 1990 and has lived there ever since. 一、时间状语从句 状语从句在句中做状语，修饰主句的谓语动词、形容词、副词或整个句子。状语从句通常由一个连词或一个起连词作用的词组引导，可分为时间、地点、原因、目的、结果、条件、方式、让步和比较九种。 1. 引导时间状语从句的连词和词组有：when, while, as, as soon as, the moment, directly, instantly, immediately, until, till, before, after, since, ever since, once, whenever, every time, each time等。 2. 在时间状语从句中，其谓语动词一般不用将来时，而用一般现在时代替一般将来时，用一般过去时代替过去将来时，用现在完成时代替将来完成时等。 I said I would tell him when he came back. 3. when引导的时间状语从句中，谓语动词既可以是延续性动词，也可以是非延续性动词，可用于主句动作和从句动作同时发生或从句动作先于主句动作。 When I lived there, I used to go to the seashore on Sundays. 注意　当when引导的从句是系表结构，且主语和主句的主语一致，表语又是一个名词时，可以用as引导的省略句来代替when引导的从句。 As a young man (When he was a young man), he was fond of hunting. 当他是一个年轻人时，喜欢打猎。 4. when还可用做并列连词，其意义为“那时；这时”，相当于and at this/that time。 We were about to start when it began to rain. 我们正要出发，这时天下起雨来。 when还用于下列句式： Somebody was doing something when ... Somebody was on the point of doing something when ... Somebody had just done something when ... 5. while引导的动作必须是延续性的，侧重主句动作和从句动作相对比。 While he was reading, his wife was cooking. 他在读书时，他妻子在做饭。 6. as引导一个持续性动作，多用于主句动作和从句动作同时发生，常译为“一边……一边……”。 7. as soon as, immediately, directly, the moment, the minute, no sooner ... than ..., hardly/scarcely ... when ..., once ...都可以表示“一……就……”，从句中用一般时态代替将来时态。 Once you remember it, youll never forget it. 你一旦记住它，将绝不会忘记。 8. 对于no sooner ... than ...和hardly/scarcely ... when ...这种结构， no sooner与hardly/scarcely引导的