袁隆平博士种植的是被称为“超级杂交水稻”的稻种。
该句为复合句,what引导宾语从句且在从句中作主语。
what引导的名词性从句相当于名词的作用,可作主语、宾语、表语,且what在从句中要用作主语、宾语或表语。
The question is what he wants to do next.
问题是他下一步想做什么。
What you need is patience.
你需要的是耐心。
Tell me what you would like to drink.
告诉我你想喝什么。
●易混辨析
名词性从句中的that,what与which
(1)that在名词性从句中只起引导作用,不充当句子成分,且在宾语从句中常省略。
It's a pity that Robert can't attend our party.
(2)what在名词性从句中既起引导作用,又充当句子成分,相当于“the+名词+定语从句”。
What we need is time.=Something that we need is time.(what在从句中作宾语)
(3)which在名词性从句中亦充当句子成分,但有限制范围,要求从两者或一群中加以选择。
Tell me which Jones you mean,Jones the baker or Jones the postman?
即境活用单项填空
You can only be sure of________you have at present;you can't be sure of something________you might get in the future.
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