10）有些句子，虽然没有表示过去确定时间的状语，但实际上是指过去发生的动作或存在的状态的话，也要用过去时。

I didn't know you were in Paris.

我不知道你在巴黎。

（因为在说话时，我已经知道你在巴黎了。这句话指的是说话之前，所以只能用过去时表示。实际上，这句话暗指：But now I know you are here.）

I thought you were ill.

我以为你病了呢。

（这句话应是在说话之前，我以为你病了。但是现在我知道你没病）

辨别正误

Li Ming studied English this morning.

（把此句变为一般疑问句）

（×）1.Did Li Ming studied English this morning？

（动词应该用原形）

（×） 2. Does Li ming Study English this morning？

（时态应该用原句子的时态）

（×） 3.Was Li Ming studied English this morning？

（应该用一般动词，而不是be动词）

（О） 4.Did Li Ming study Enghish this morning？

常见错误如下:

一　把动词变成过去式易出错

例: 1 They stoped (stop) talking just now.

2 They plaied (play) football yesterday.

答案: 1 stopped 2 played

解析:我们可以记住下面的口诀:"动词变成过去式,双写规律要牢记;y前若是辅音字,y变i加-ed;y前若是元音字,只须直接加-ed."

二忘记把动词变成过去式

例: I fly (fly) kites on the afternoon of Sunday.

答案: flew

解析:我们可以记住下面的口诀:"一般过去时态里,过去形式莫忘记".

自主检测:

（一 ）选择

1 She lived there before he____to China.

A. came B. comes C. come D. coming

2 I _____but_____nothing.

A . was listened;was hearing B. listened;heard

C . have listened; heard D. listened; heard of

3 When did you ____here?

A. got to B. reached C. arrive in D. reach

4 I____my homework at 7:00 yesterday evening.

A. finished B. would finish C. was finishing D. finish

5 -He didn't go shopping with you yesterday afternoon, did he?

- _______.

A. No, he doesn't B. Yes, he didn't C. No, he did D. Yes, he did.

6 -I have had supper.

- When ____you____it?

A. have; had B. do, have C. did,have D. will have

答案: 1 A 2 B 3 D 4 A 5 D 6 C

（二） 填空

1 They____(be) on the farm a moment ago.

2 There____(be)a shop not long ago.

3 Jenny____(not go)to bed until 11:00 o'clock last night.

4 Danny _____(read )English five minutes ago.

5 I _____(see)Li Lei ____(go) out just now.

6 He ____(do)his homework every day. But he __(not do)it yesterday.

7 When I was young, I _____(play)games with my friends.

8 When ____you_____(write)this book?

I _____it last year.

9 Did he____(have) lunch at home?

10 I _____(eat) the bread, I 'm full now.

答案:1 were 2 was 3 didn't go 4 read 5 saw go

6 does ; didn't do 7 played 8 did write ; wrote 9 have 10 have eaten

三 在句式变换时易出错

例: 1 We didn't went (not go) out last Friday.

2 Did you had (have) a good time yesterday?

答案: 1 didn't go 2 Did have

解析:请记住口诀"见助动, 用原形."

四易与单三人称作主语的一般现在时弄混

例: He taughts (teach) me English last year.

答案: taught

解析:行为动词的过去式无人称和数的变化.即使主语是单三人称,也和其它人称所用动词的形式一样.

五易与现在完成时弄混

例: 我看过这部电影

I saw(see) the film.

答案: I have seen (see) the film.

解析:"我看过这部电影"说明我了解这部电影的内容,强调现在的情况,应用现在完成时;

一般过去时态的句子只是说明我看了这场电影,与现在无关..