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《Grammar》集体备课PPT课件优质课下载
非谓语动词
to do
doing
done
一般式
to do
doing
done
一般被动 式
to be done
being done
done
完成式
to have done
having done
done
完成被动式
to have been done
having been done
done
Look at the following sentences
1. When they heard the bad news, they couldn’t help crying.
----When hearing the bad news, they couldn’t help crying.
----Hearing the bad news, they couldn’t help crying.
2. If they had been given more attention,the trees could have grown better.