1.Bob doesn't know ___ to write about.

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1.Bob doesn't know ___ to write about.
A how B that C what D where
2.i can't decide___.
A what to do it B how shall i do it C how to do it D what shall i do it
说明区别还有就是什么事用what to do什么时候用 how to do
第一题也要说明区别哦！

1.Bob doesn't know ___ to write about.
选C.
about 是介词,后面要跟个名词性质的词作宾语.what 就是这样的词.
BOB不知道该写些什么.
如果选how,要添加一个宾语It.所以,句子要变成Bob doesn't know how to write about it.
.i can't decide___.选C.
A what to do it B how shall i do it C how to do it D what shall i do it
what已经是宾语了（这里作动词decide的宾语）所以,如果加个IT.就重复了.
这题用HOW.道理同上题.
另外,宾语从句里得用陈述句语序.所以B错在顺序.应该是how i shall do it.

1.Bob doesn't know ___ to write about. (1)Bob doesn't know ------to write A how B what C.when D.why Bob doesn't know the way to the cinema.I don't know,____ A.e she doesn't know ___ .A to take which step 1.The man doesn't know how to ___ this word in English. If Bob's wife doesn't agree to go on a holiday in winter,___ 几道英语时态填空1.He doesn't know a thing about the verbs,for he ___ "but how can you?you don't know how to write!" "it doesn't m she doesn't know how to read or write(改为肯定句) He doesn't know ____ about Africa. what good is it to ask her about that?She doesn't know it er do you know what to ____?（write,write about)