小学现在进行时课件-PPT(精)［PPT］.ppt

The present continuous tense
现在进行时
基本用法
概念:表示现在正在进行的动作和发生的事
现在进行时的标志性词语有now, look, at the
moment, listen等
现在进行时的基本构成:
主语+be动词+现在分词
Eg: They are drawing pictures.
现在进行时
现在分词的构成规则:
-ing,如:read-reading
,去e加-ing,如:write-writing
,末尾只有一个辅音字母,应先双写这一字母,再加-ing。
Eg:swim-swimming run-running
cut-cutting shop-shopping sit-sitting
特殊变化:lie-lying平躺,die-dying死亡
常用的现在分词
现在进行时的句式:
—主语+be+doing
Eg: I am doing my homework.
—主语+be+not+doing
Eg: I am not doing my homework.
—be提到句首(注意人称变化)
Eg: Are you doing your homework?
现在进行时
What is he doing?
He is writing.
What is she doing?
She is reading.
现在进行时
What is he doing?
He is puter.
现在进行时
What is he doing?
He is playing basketball.
现在进行时
What is she doing?
She is drinking.