外研版英语九年级上册Module1 时态总结

Module1 时态总结
一、一般现在时
1.构成：(1) 主语+ am/is/are+表语
(2) 主语+ 实义动词（动词单三形式）+其他
2.标志词：always, usually, often, sometimes, never, every day /week /month/year/…
二、一般过去时态
1.构成：（1）主语+ am/were+表语
(2) 主语+实义动词过去式+其他
2.标志词：yesterday, the day before yesterday, three days ago, last night/week/month…, in the past, just now=a moment ago…
三、一般将来时
1.构成：（1）will/shall +动词原形
(2) be going to +动词原形
2.标志词：tomorrow, the day after tomorrow, in three days, in (the) future, next week/month/term…, from now on...
四、现在进行时
1.构成：am/is/are＋v.-ing
2.标志词：now, at the moment, Look! Listen! Be quiet! …
3.注意（1）下列这些动词一般不用于现在进行时态的句子中：see, hear, like, love, want, would like, be，have, know, think, forget等。

（2）有几个瞬间动词可以用现在进行时表将来，如：begin, start, come, go, leave, arrive等。

五、过去进行时
1.构成：was/were + v.-ing
2.标志词：at that time, this time yesterday, then, at that moment, at 8 last night, when sb. did sth. …
注意在含有when或while引导的时间状语从句的主从复合句中过去进行时的运用：
1）主句中的动作先于从句中的动作发生，且进行的时间较长时，主句用过去进行时（从句用一般过去时）。

eg: When the UFO arrived, I was watching TV.
2）从句中的动作先于主句中的动作发生，且进行的时间较长时，从句用过去进行时（主句用一般过去时）。

eg: While I was walking in the street, the accident happened.
3) 若主、从句动作同时发生或无所谓先后时，主从句可同时使用过去进行时，此时的时间状语从句一般由while引导。

eg: I was doing my homework while my parents were doing the chores.
注意：在上述情况下，若动词为表示状态的延续性动词，一般都应用一般过去时，而不用过去进行时。

eg: Luckily, when I went to see him, he was at home.
六、现在完成时
1.结构：(1)主语+has/have +过去分词+其他
2.标志词：already, just, yet, ever, never, so far(till now/up to now), recently, in the past 3 years, before, since+时间点, for+时间段等。

注意延续性动词与非延续性动词的用法
①非延续性动词不可与表示一段的时间状语连用。

eg: The poor old man has died. (T)
The poor old man has died for three years. (F)
The poor old man has been dead for three years.
但在否定句中，可以与表示一段的时间状语连用。

eg: He hasn’t come here for several days.
②非延续性动词与一段时间状语连用，可将非延续性动词转化为延续性动词：come→ be h er go→ be there die→ be dead
borrow→ keep buy→ have leave→ be away
join→ be in/be a…member begin to study→ study
finish→ be over get up→ be up pu t on→ wear
catch a cold→ have a cold wake up→ be awake
fall as leep→ be asleep arrive/get→ be
lose→ not have leave→ be away from。