“疑问词+不定式”可用作哪些句子成分
一、用作主语。如:
When to start has not been decided. 何时动身尚未决定。
What to read is an important question. 该读些什么是一个很重要的问题。
How to begin is more difficult than where to stop. 如何开始比到哪里停止还困难。
二、用作表语。如:
The question is what to do next. 问题是下一步怎么办。
The question is how to carry out the plan. 问题是怎样执行这个计划。
三、用作宾语。如:
1. 用作动词宾语。如:
He asked how to open the box. 他询问如何打开盒子。
She couldn’t think what to say. 她想不出说什么。
Our teacher explained how to use the word processor. 老师向我们说明如何使用文字处理机。
2. 作于间接宾语后作直接宾语。如:
I’ll show you how to do it. 我将给你讲这怎么做。
She kindly advised me what to do. 她好心的劝告我该做什么。
My sister taught me how to fold paper into a crane. 我姐姐教我如何折纸鹤。
3. 用作介词宾语。如:
I have no idea of how to do it. 我不知道如何做此事。
Bill said something to her about what to do. 比尔给她讲了讲应当怎样做。
I found a book on how to avoid having a heart attack. 我找到一本书谈如何避免心脏病复发。