题目内容

3.It took me 3hours to make the model building last night.(改为同义句)
Ispent 3 hoursonthe model building last night.

分析 昨晚花了我三个小时去制作这个模型建筑.

解答 答案:spent,on.原句是一般过去时,是句型it takes sb…to do sth表示花时间做某事,表示花费的还有spend用于sb spend…on sth或者sb spend…in doing sth(in可以省略),spend的主语必须是人,可以指花费时间、也可以指花费金钱;cost用于 sth costs sb sth,主语必须是物,多指花费金钱,少数情况可指花费时间、气力,有时表示成本的消耗;pay的基本用法是:(1)pay (sb.) money for sth.付钱(给某人)买…. (2)pay for sth.付…的钱. (3)pay for sb.替某人付钱.(4)pay sb.付钱给某人,结合句中的主语是人I,以及后面的时间3 hours和名词the model building,故用sb spend+时间+on sth,spend的过去式是spent,故答案是spent,on.

点评 take 用于 it takes sb…to do sth句型,仅指花费时间(three hours等),必须用it作形式主语,指代下文不定式内容;spend用于sb spend…on sth或者sb spend…in doing sth(in可以省略),spend的主语必须是人,可以指花费时间、也可以指花费金钱;cost用于 sth costs sb sth,主语必须是物,多指花费金钱,少数情况可指花费时间、气力,有时表示成本的消耗;pay的基本用法是:(1)pay (sb.) money for sth.付钱(给某人)买…. (2)pay for sth.付…的钱. (3)pay for sb.替某人付钱.(4)pay sb.付钱给某人

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