急！！总结现在进行时过去时！！！

快快快！我小学五年级的

一，现在进行时： 表示现在正在发生或进行的动作。

结构：be （am,is,are）+现在分词（动词ing）

如何判断现在进行时：

1，句中有now,listen,look

2，句中若有be(am ,is,are),后面又跟动词时，动词要加ing

3, 根据情景。如：its two o clock in the afternoon,they are having an English lesson

二，一般现在时： 表示现在时间内，经常发生的动作或存在的状态。

与一般现在时连用的词有“often,usually,sometimes,always,every day/week,on Sundays……

一般现在时有两种情况

1，主语不是第三人称单数时（主语是第一，二人称或复数），后面动词不变化

如：I often watch TV after school.

2，当主语是第三人称单数时，后面动词要跟保镖（s或es）

如：she often watches TV after school

三，一般过去时： 表示过去某个事间发生的动作或存在的状态。

常和下列词连用：yesterday ,last night/week, a moment ago ,just now ,at that time .this morning…

用法： 看句中是否有表示过去的词语。

在一般过去时中，动词发生变化的规律

1，规则动词在原形后加“ed”

2，不规则动词要求熟记 be (am,is,are)的过去形式am,is---was are-----were

规则动词的过去式词尾变化方式
1，一般情况下加ed	Wanted, planted, watered, climbed
2，以不发音字母e结尾的加d	Liked, lived
3，以辅音字母+y结尾的变y为i再加ed	Studied,

规则动词的词尾读音
1，在浊辅音和元音后读/d/	Lived, listened
2，在清辅音后读/t/	Liked, helped
3，在/t/，/d/音后读/id/	Wanted.

不规则动词归类

1） is, am -was are-were

2) begin- began ring-rang drink-drank swim-swam

sing- sang sit-sat run-ran have-had

come- came eat-ate make-made give-gave

3) write-wrote ride-rode speak-spoke drive-drove

tell- told choose-chose win-won get-got

take- took stand-stood

4) sleep-slept sweep-swept feel-felt keep-kept

spell - spelt spend-spent bend-bent meet-met

go-went

5) know- knew fly-flew blow-blew grow-grew

draw- drew

6) teach-taught catch-caught buy-bought fight-fought

think- thought

7) find-found hear-heard say-said mean-meant

see- saw learn-learnt

8) put- put read-read cut-cut let-let

不规则动词归类

1） is, am -was are-were

2) begin- began ring-rang drink-drank swim-swam

sing- sang sit-sat run-ran have-had

come- came eat-ate make-made give-gave

3) write-wrote ride-rode speak-spoke drive-drove

tell- told choose-chose win-won get-got

take- took stand-stood

4) sleep-slept sweep-swept feel-felt keep-kept

spell - spelt spend-spent bend-bent meet-met

go-went

5) know- knew fly-flew blow-blew grow-grew

draw- drew

6) teach-taught catch-caught buy-bought fight-fought

think- thought

7) find-found hear-heard say-said mean-meant

see- saw learn-learnt

8) put- put read-read cut-cut let-let

表示过去某个事间发生的动作或 表示现在正在发生或进行的动作。 存在的状态。