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语法讲解

(2023-03-11 14:57:20)

一般过去时

表示一般过去式的动词通常用动词的过去式形式来表示,而动词的过去式是在动词原形的基础上变化的。动词的过去式可分为规则动词和不规则动词。规则动词的过去式变化如下

1)一般情况下,动词词尾加 -ed ,如: 

worked played wanted acted

2)以不发音的 -e 结尾动词,动词词尾加 -d,如: 

lived moved decided declined hoped judged raised wiped

3)以辅音字母 + y结尾的动词,把-y变为-i 再加-ed,如: 

studied tried copied justified cried carried embodied emptied

4)以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 -ed,如: 

stopped  planned

5)注:不规则动词的过去式变化规律性不强,须多加记忆。 P148

go - wentmake - made get - got buy - bought come - came fly-flew is/am-was are-were see-saw bring-broughtdo-didteach-taught, think-thought, are-were, say-said, sit-sat. Read-read, spend-spent.

用法:

1)表示过去某一时刻或某一段时间内所发生的动作或情况,通常一般过去式带有表示动作时间状语的词,词组或从句, yesterday, the day before last, last week, two days ago  in 2019,上下文清楚时可以不带时间状语。 I worked in that factory last year. 去年我在那一家工厂工作。 I went to the Tian Long Mountain yesterday. 昨天我们去了天龙山。 

2)一般过去时态:表示过去某一时间所发生的动作或存在的状态。谓语动词要用一般过去式。

时间标志:yesterday(昨天), last week(上周), last month(上个月), last year(去年), two months ago(两个月前), the day before yesterday(前天),in 1990 (1990), in those days (在那些日子里)等表示过去的时间状语。 

如: I was born in 1990. (我出生在1990) 

When did you go to the park? (你是什么时候去的公园)。 

I went to the park last week. (我是上周去的公园) 

在上面的句子中第一句属于be动词的一般过去时态;第二句和第三句属于实义动词的一般过去时态。 

1 Be 动词的一般过去时态 

在没有实义动词的句子中使用be动词, am is 的过去式为was; are的过去式为were.

构成:肯定句:主语+was (were) +宾语 

如:I was late yesterday. (昨天我迟到了。) 

否定句:主语+was (were) +not+宾语 

如:We weren't late yesterday. (我们昨天没迟到)

疑问句:Was (Were) +主语+宾语 

如: Were you ill yesterday? (你昨天病了吗?) 

肯定回答: Yes, I was. (是的,我病了。)

否定句: No, I wasn't. (不,我没病。)

特殊疑问句: 特殊疑问词+was (were) +主语+宾语 

如:When were you born? 你是什么时候出生的?

读法:

规则动词词尾加-ed有三种读音: 

1. 在清辅音后读作[t]。如:asked, helped, watched, stopped

2. 在浊辅音和元音后读作[d]。如:enjoyed, studied, moved, called

3. t / d后读作[id]。如:wanted, needed

不规则动词的过去式大体上归纳有以下六条记忆法: 

1. t结尾的词,过去式与原形相同。如:put—put, let—let, cut—cut, beat—beat

2. d结尾的词,把d变成t。如:build—built, lend—lent, send—sent, spend—spent

3. n结尾的词,在词后加t。如:mean—meant, burn—burnt, learn—learnt

4. ow / aw结尾的词,把ow / aw变成ew。如:blow—blew, draw—drew, know—knew, grow—grew

5. 含有双写字母的词,将双写改为单写,在词尾加t。如:keep—kept, sleep—slept, feel—felt, smell—smelt

6. 含有元音字母o / i的词,将o / i变成a。如:sing—sang, give—gave, sit—sat, drink—drank

 

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