关于英语He does not know ( )to write about.He does not know ( )to write about.A how B what括号里为什么要用what,而不用how?

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关于英语He does not know ( )to write about.He does not know ( )to write about.A how B what括号里为什么要用what,而不用how?

关于英语He does not know ( )to write about.He does not know ( )to write about.A how B what括号里为什么要用what,而不用how?
关于英语He does not know ( )to write about.
He does not know ( )to write about.
A how B what
括号里为什么要用what,而不用how?

关于英语He does not know ( )to write about.He does not know ( )to write about.A how B what括号里为什么要用what,而不用how?
what是疑问代词,可以做about的宾语,而how是疑问副词不可以做宾语

about sth所以用what

what

如果没有about,则how就行,但是about是介词,则必须又一个宾语,而what正好就可以做名词也就可以是宾语,所以用what

因为about限制了对于宾语提问,所以一定是问什么而不是问怎么

about是介词,需接名词或代词,或者名词性质的

write about.
write后边有about所以用what,
what需要接内容
如果没有about,可以用how

what

what

write about后面应该加什么-意思是写一些什么,把what前掉,所以选what
而how是强调怎么写,所以不适合