"what"引导的是名词性从句,它在句子中充当主语、宾语或表语,用于提问或者表达特定的名词概念。
What引导主语从句
当"what"作为连接代词时,它可以引导主语从句,通常位于句子的开头。
What you said is very important.(你说的非常重要。)
What we need is time.(我们需要的是时间。)
在这种情况下,“what”在主语从句中充当主语或者宾语。
What引导宾语从句
"what"同样可以引导宾语从句,此时"what"在从句中通常作宾语。
She didn't tell me what she was doing.(她没告诉我她在做什么。)
I wonder what he will say.(我想知道他会说什么。)
What引导表语从句
在这类从句中,“what”后面通常跟着系动词,构成表语从句。
The problem is what we should do next.(问题是我们接下来应该做什么。)
This book is what I need for my research.(这本书正是我研究所需要的。)
相关问题与解答
问题1: "What"引导的从句可以用作定语吗?
是的,"what"引导的关系从句可以用作定语,修饰名词或代词。
What little money he had, he spent on books.(他仅有的一点钱都用来买书了。)
She has what assets she inherited from her parents.(她拥有从父母那里继承来的资产。)
问题2: "What"和"that"在引导从句时有什么区别?
"What"通常用于指代某个具体的事物,并在从句中充当成分(主语、宾语或表语),而"that"是一个连接词,不充当任何成分,主要用于引导陈述性的内容,不具有指代功能。
I found what I was looking for.(我找到了我在找的东西。)("what"指代找到的东西,充当宾语)
The fact is that he has left.(事实是他离开了。)("that"仅用于连接主句和从句,没有指代功能)