①I have very difficult problem (to work out) ②It
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第一个句子是我有一个很困难的问题要解决。词语是work out a problem。第二个句子主语是problem，这样看的话问题是需要被解决的，所以要用be，be+及物动词的过去分词表示被动语态
咨询记录 · 回答于2022-11-06
为什么第一个不用加be，第二个句子要加
①I have very difficult problem (to work out)
②It is one the important problems (to be solved) tomorrow.
①I have very difficult problem (to work out)
为什么第一个不用加be，第二个句子要加
第一个不可以理解为问题需要被解决吗
①I have very difficult problem (to work out)
为什么第一个不用加be，第二个句子要加
②It is one the important problems (to be solved) tomorrow.
①I have very difficult problem (to work out)
为什么第一个不用加be，第二个句子要加
②It is one the important problems (to be solved) tomorrow.
①I have very difficult problem (to work out)
为什么第一个不用加be，第二个句子要加
②It is one the important problems (to be solved) tomorrow.
①I have very difficult problem (to work out)
为什么第一个不用加be，第二个句子要加
②It is one the important problems (to be solved) tomorrow.
①I have very difficult problem (to work out)
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