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? ?by the way在主要話題或交流中用以插入題外的話或問題,還可以表示在途中。如: 順便問一下,那個(gè)工程師在哪兒? ?By the way, where is the engineer? train must have weighed more than one thousand kilos. ?must have done是對(duì)過去情況的推測(cè)。如: ?They must have started by now. ?may have done表示“可能已經(jīng) ……” ?should have done表示“本應(yīng)該 ……” 5. It was such a nice surprise to see your ! 思考:回顧一下與這個(gè)句子相似的句型 注意:本句的句型是 it’s+名詞 +動(dòng)詞不定式 , 其中 it作形式主語 , 代替 to… 和他打架是我的錯(cuò) 。 It’s my fault to fight with him.