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1．主觀從隨便：主句現在時，從句時態(tài)自由主句為現在時（ say / says / think / know 等），從句可根據實際時間選用任意時態(tài)。 例①: Tom says that he is swimming now .湯姆說他現在正在游泳。 例②: Linda says that she has finished her homework ．琳達說她已寫完作業(yè)。例③: He knows that she will come tomorrow ．他知道她明天會來。     |
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