if 后加动词表被动 是if being done 还是if done
if 后加动词表被动 是if being done 还是if done
英语语法until后面被动是跟being done还是done
是No harm is done to your health if...还是no harm does to your
before done 还是being done
if sb had done sth/ sb have done造句
if sb had done ,sb would have done造句
求when done if done 表示条件区别?
upon放在句首,后面的动词使用被动语态时,是用being done 还是直接写done
being done 表示进行被动?
have done还是be done是被动语态,
非谓语中having done being done表主动还是被动?
to be done还是being done?