请教一个英文句子的语法问题All you need to do to use the drive is connect it all you need to do is askall you need to do is just be yourself.我的问题是：is 后面为什么接动词原形啊.不是要接ing
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请教一个英文句子的语法问题All you need to do to use the drive is connect it all you need to do is askall you need to do is just be yourself.我的问题是：is 后面为什么接动词原形啊.不是要接ing
请教一个英文句子的语法问题
All you need to do to use the drive is connect it
all you need to do is ask
all you need to do is just be yourself.
我的问题是：is 后面为什么接动词原形啊.不是要接ing
请教一个英文句子的语法问题All you need to do to use the drive is connect it all you need to do is askall you need to do is just be yourself.我的问题是：is 后面为什么接动词原形啊.不是要接ing
一般来讲,be动词后面是不能直接加动词原形的,而应该加不定式（to do）、现在分词（doing）或过去分词（done）.
这些句子的关键在于前面的all you need to do,已经出现了带to的不定式,is后面其实是不定式形式,而只是为了避免重复而省略了to.
all you need to do is to do sth.记住这个句型就好了~
其实这里是省略了to，应该是be to do搭配~
前面的all you need to do是主语从句啦~
前面有need,hope,make,let等词，is后面的表语是省略to的不定式。不定式可作表语而动词原形不能。
is是系动词 ask在这里作表语
这句话是错的。应该改成is connecting或者is to connect
all you need to do is + 名词或者to do (sth.)
我认为不能省略to