All you have to do is to listen
问题描述：
All you have to do is to listen
all you have to do 这部分是不是主语?
is 和 to listen 构成系表 ?
all you have to do that is to listen 加个that是不是也行 ?
总之分析一下这个句子 说说all you have to do 是什么成份
have to do 要理解成 have 加不定式to do 还是看成 have to 和 do
另外 have to (不得不) 放在句子里叫做什么成份?
you have to do 理解成插入语
all是主语这样可不可啊?
答
all you have to do是句子的主语部分,all是中心词,you have to do前面其实省去了that,（that）you have to do是一个定语从句,修饰前面的不定代词all,all是先行词.is和to listen 构成系表结构是对的.all you have to do 后面不能加that,因为实际上是定语从句that you have to do中that在定语从句中作宾语,故可以省去,但do后不能有that,因为实际上do在前面已经有了关系代词that作它的宾语（它是有宾语的）.have to do的结构为have to+ 动词原形,have to do在（that）you have to do这个定语从句中作谓语.补充：you have to do是all的定语从句,不是插入语.