小学四年级下册英语语法知识点6篇

三、一般现在时的用法

1．表示经常或习惯性的动作。常与often（经常）,always（总是）,sometimes（有时）,everyday（每天）,onSundays/Mondays等表示频度的时间状语连用。

一般现在时的时间状语有：today,often,sometimes,always,usually,every day(week,month,year,…),this year,oncea week(month,year,…)一周（月，年）一次

例句：I get up at 6 o’clock every day.

He often goes toschool by bike.

2．表示客观事实，普遍真理。

例句：Two and two are four.二加二等于四。

The earthmoves around the sun.地球绕着太阳转。

第五章现在进行时态

一、现在进行时的定义

现在进行时是表示在现在某一时刻或某段时间正在进行的动作的时态。

二、现在进行时的构成

现在进行时由“系动词（am，is，are）+现在分词（动词加-ing形式）”

构成。现在以动词work为例，对现在进行时的肯定句、否定句、疑问句及简略答语列表说明：

肯定句/否定句

I am working./I am not working.

You are working./You are not working.

He/She/It is working./He/She/It is not working.

We/You/They are working./We/You/They are not working.

疑问句/简略答语

Am I working?/Yes,you are.

/No,you are not.

Are we working?/Yes,we/you are.

/No,we/you aren’t.

Are you working?/Yes,I am.

/No,I am not.

/Yes,we are.

/No,we are not.

Is he/she it working?/Yes,he/she/it is.

/No,he/she/it is not.

Are they working?/Yes,they are.

/No,they are not.

三、现在分词的构成

1.一般在动词原形末尾加-ing。

stay---staying do---doing listen---listening

2.以不发音的字母e结尾的动词，先去掉e，再加-ing。

make---making ride---riding give---giving

3.以一个辅音字母结尾的重读闭音节词，先双写这个辅音字母，再加-ing。

put---putting sit---sitting run---running

1.以ie为重读音节结尾的单词，先去掉e，把i变为y，再加–ing。