题目内容

2.Tom saw his sister walk into the room just now.(变成被动语态)
His sister wasseento walk into the room by Tom just now.

分析 汤姆看见他的姐姐刚才走进了房间.
汤姆的姐姐被汤姆看见刚才走进了房间.

解答 答案:seen to.原句中saw和just now得知是一般过去时,一般过去时的被动语态的构成是was/were+动词的过去分词,see在主动语态中:see somebody do,在被动语态中to应被还原:be seen to do,故答案是:seen to.

点评 本题考查被动语态,做此类题时,关键是根据时间词判断采用结构,另外see在主动语态中:see somebody do,在被动语态中:be seen to do.

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