概要：初中英语用一般过去时代替过去完成时语法讲解1) 两个动作如按顺序发生，又不强调先后，或用then，and，but 等连词时，多用一般过去时。例如：When she saw the mouse，she screamed. 她看到老鼠，就叫了起来。My aunt gave me a hat and I lost it. 姑妈给了我一顶帽子，我把它丢了。2 ) 两个动作相继发生，可用一般过去时;如第一个动作需要若干时间完成，用过去完成时。例如：When I heard the news, I was very excited.3) 叙述历史事实，可不用过去完成时，而只用一般过去时。例如：Our teacher told us that Columbus discovered America in 1492.编辑推荐初中英语语法：介词短语整理1.介词+动名词: in doing so, to my saying that2.介词+连接副词/连接代词/what从句:over what he had better do3.介词+名词：at the door, into the

初中英语用一般过去时代替过去完成时语法讲解

1) 两个动作如按顺序发生，又不强调先后，或用then，and，but 等连词时，多用一般过去时。例如：

When she saw the mouse，she screamed. 她看到老鼠，就叫了起来。

My aunt gave me a hat and I lost it. 姑妈给了我一顶帽子，我把它丢了。

2 ) 两个动作相继发生，可用一般过去时;如第一个动作需要若干时间完成，用过去完成时。例如：

When I heard the news, I was very excited.

3) 叙述历史事实，可不用过去完成时，而只用一般过去时。例如：

Our teacher told us that Columbus discovered America in 1492.

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初中英语语法：介词短语整理

1.介词+动名词: in doing so, to my saying that

2.介词+连接副词/连接代词/what从句:over what he had better do

3.介词+名词：at the door, into the bag

4.介词+代词: for me, of others

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初中英语语法：时间介词整理

(1)at,in , on 在……时

at表示某一时刻或较短暂的时间，或泛指圣诞节，复活节等。

如: at 3:20, at this time of year, at the beginning of, at the end of …,

at the age of …, at Christmas， at night, at noon, at this moment

在last, next, this, that, some, every 等词之前一律不用介词

如：We meet every day.