小学现在进行时精-1(精)PPT课件.ppt

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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.
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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
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常用的现在分词
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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?
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现在进行时
What is he doing?
He is writing.
What is she doing?
She is reading.
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现在进行时
What are you doing?
I am running.
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现在进行时
What is he doing?
He is playing computer.
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现在进行时
What is he doing?
He is playing basketball.
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现在进行时
What is she doing?
She is drinking.
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