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动词现在分词的变化规则：

一般在动词末尾直接加-ing

以不发音字母e结尾的动词，先去掉e，再加-ing

如： have-having ride-riding come-coming

make-making dance-dancing write-writing

以重读闭音节结尾的动词，中间只有一个元音字母，词尾只有一个辅音字母，应双写末尾的辅音字母，再加ing

如： put-putting run-running begin-beginning

stop-stopping swim-swimming shopping

sit-sitting get-getting

以ie结尾的动词，把ie变成y再加ing

如： lie-lying tie-tying die-dying

练习：

Look! He _____________(help)their mother do the housework.

__________(谁)are the boys doing? They are _________(sing) in the room.

Don’t talk here. My mother ____________(sleep)

Danny ___________(write).Don’t call him.

When ________he__________bac 内容过长，仅展示头部和尾部部分文字预览，全文请查看图片预览。 our family.

He always _______(forget) to close the window.

I _____(leave) in a minute. I _____(finish) all my work before I _____(leave).

It is very cold these days. It _____(snow) soon.

Where is Tom ? ------He ________(play) baseketball on the playground.

My parents _________(watch) TV now.

There are some boys __________(swim) in the river.

Bob can __________(speak) Chinese very well.

It’s ___________(snow) outside.You’d better wear warm clothes.

We always _________(go) to school on foot.

Look, the bus ____________(come).

Today is Monday. Tomorrow _______(be) Tuesday.

Some young people _________(be,swim) in the lake.

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