Question

英语句子求分析

If it had not been for your timely assistance in giving me first aid 这里面 in是什么作用

Answer 1

in是介词，in giving me first aid是介词短语，作后置定语，修饰assistance。

追答

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追问

为什么必须用in呢

追答

in... 表示＂在⋯方面＂

谢谢采纳

Answer 2

For three years he had prowled the seven hundred miles of storm drains which threaded their way under the skin of Los Angeles like the veins in a giant\'s body—and he had found nothing.