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需要详解 (4)1.______ finished his assignments ,he had to stay in

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需要详解 (4)
1.______ finished his assignments ,he had to stay in the reading- room all day long.
A.Having not B.Being not
C.Not having D.Having not been
2.Mary has been working for a whole day.I think it is time ______.
A.she has a rest B.she can have
C.she had a rest D.she would have
3.______ (short) after he graduated from university,she went abroad to pursue further studies.
1.______ finished his assignments ,he had to stay in the reading- room all day long.
A.Having not B.Being not
C.Not having D.Having not been
C非谓语动词的否定式的not都是放在非谓语动词之前.
2.Mary has been working for a whole day.I think it is time ______.
A.she has a rest B.she can have
C.she had a rest D.she would have
C it is time that +主语+过去式+(这是一个固定结构,可以看成是虚拟语气:该是某人做某事的时候了.)
3._Shortly_____ (short) after he graduated from university,she went abroad to pursue further studies.
Shortly after=Soon after……不久之后