7．It is the professor together with his assistantsthat/who has helped us for free in the past three months．（help）
在過去的三個月正是這名教授和他的助手們無償?shù)?幫助了我們．

分析 在過去的三個月正是這名教授和他的助手們無償?shù)貛椭宋覀儯?/p>

解答 答案：that/who has helped；
幫助：help；句意表達(dá)的是已經(jīng)完成的動作，要用現(xiàn)在完成時態(tài)；句中it is…that…構(gòu)成強(qiáng)調(diào)句型，對主語the professor together with his assistants進(jìn)行強(qiáng)調(diào)；together with連接并列主語時，謂語動詞要和前面的主語the professor保持一致．

點評 翻譯題在解題是首先要確定好句子的時態(tài)，然后要把握好短語表達(dá)，最后要注意句子結(jié)構(gòu)．

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