1-------What is behind that tree -------There mu1-------What is behind that tree -------There must be a dog (sitting) behind it .2.The telephone (inventing) by Alexander Bell is useful for people.问:为什么1句sit要用现在分词?为什么2句in
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1-------What is behind that tree -------There mu1-------What is behind that tree -------There must be a dog (sitting) behind it .2.The telephone (inventing) by Alexander Bell is useful for people.问:为什么1句sit要用现在分词?为什么2句in
1-------What is behind that tree -------There mu
1-------What is behind that tree
-------There must be a dog (sitting) behind it .
2.The telephone (inventing) by Alexander Bell is useful for people.
问:为什么1句sit要用现在分词?为什么2句invent要用ing形式?
1-------What is behind that tree -------There mu1-------What is behind that tree -------There must be a dog (sitting) behind it .2.The telephone (inventing) by Alexander Bell is useful for people.问:为什么1句sit要用现在分词?为什么2句in
1.(sitting) behind it 是现在分词短语作后置定语的,我们知道,现在分词是表主动,进行的.可以改为：
that/ which is sitting behind it
2.inventing 不对,应该是invented,因为其逻辑主语The telephone (电话） 是invent(发明）所表动作的承受着,表被动,完成要用过去分词作定语
= which was invented