call upon to用法

Whaley recalls how at the beginning of the year, when called upon to read, Chris would excuse himself to go to the bathroom.

1) how在句子中的成分/作用是什么?

2called upon to read中,upon为介词,to read为不定式,属于介词后跟不定式吗?

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曹荣禄
擅长:动词用法,句法问题

1 how在这里=that,引导名词性从句作宾语。how的这种用法为非正式用法,改为that后意义不变。

2 call on/upon为短语动词,可以后接复合宾语,call on/upon sb to do sth. 不定式为宾补。这个句型可以用被动语态,sb is called on/upon to do sth. 不定式在被动结构中改称主语补足语,不是介词on/upon的宾语。when called upon to read = when he was called upon to read.  有的不及物动词+介词构成的短语动词是可以用被动结构的,如 look at sb/sth. sb/sth is looked at.

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  • 提出于 2021-05-03 23:02

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