小学英语语法之现在进行时.ppt

现在进行时
By Jessica
What is Ali doing?
He is walking.
He is reading a book.
He is dancing.
He is flying a kite.
What are they doing?
They are playing basketball.
They are running.
现在进行时的含义与构成
含义:表示此时此刻或一段时间内正在进行的动作或发生的事情
He is reading a book. 他正在看书。
She is teaching at a school. 她在一所学校教书。
标志性词语:now Look! Listen!
at present at the moment
构成:主语+be(am, is, are)+doing(现在分词)
构成:主语+ be+ doing
Tom is doing his homework.
第一人称+am+doing
第二人称+are+doing
第三人称+is+doing
   I’m/You’re/He’s /She’s /We’re/They’re working.
口诀:我用am,你用are,is用在他她它。
单数名词使用is ,复数名词使用are。
现在分词的变化规律
1)直接加-ing
如: open—opening clean—cleaning sing—singing
study—studying work—working
2)以不发音字母e结尾,去e加-ing
如: ing live—living take—taking
make—making dance—dancing close—closing drive—driving write—writing use—using
但是see—seeing
以ie结尾:lie—lying die—dying
现在分词的变化规律
3)以重读闭音节结尾,双写最后一个辅音字母加-ing
如:sit—sitting run—running
put—putting get—getting
begin—beginning swim—swimming
shop—shopping stop—stopping

Exercise:P47 二
Game Time
时间:now, at present, at the moment
地点人物事件
现在进行时的句式
陈述句
肯定句
主语+be doing+宾语
否定句
主语+be not doing+宾语
疑问句
一般疑问句
Be+主语+ doing+宾语
特殊疑问句
特殊疑问词+一般疑问句
肯定句: She is watching TV.
否定句: She is not watching TV.
一般疑问句:Is she watching TV?
特殊疑问句:What is she doing?
Who is watching TV?
Exercises:
John is playing football now.
变为否定句:
变为一般疑问句:
根据画线部分提问:
They are waiting for the bus.
变为否定句:
变为一般疑问句:
根据画线部分提问: