一般现在时：be
done（be随人称变化）
一般过去时：was/were
done
一般将来时：will
be
done
现在进行时：be
being
done（前面的be随人称变化，后面的being固定）
过去进行时：was/were
being
done（being固定）
将来进行时：will
be
being
done（being固定）
现在完成时：have/has
been
done
过去完成时：had
been
done
将来完成时：will
have
been
done
将来完成进行时：will
have
been
done
现在完成进行时：have
been
being
done
过去将来时：would
be
done
过去将来完成时：would
have
been
done
过去完成进行时：had
been
being
done
过去将来进行时：would
be
being
done
过去将来完成进行时：would
have
been
being
done
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