they are afraid (that)I'll live alone.(that)可省?我感觉是同位于?是宾语从句?是宾语从句就能省?做宾语可省是定于从句?

问题描述:

they are afraid (that)I'll live alone.(that)可省?
我感觉是同位于?是宾语从句?
是宾语从句就能省?做宾语可省是定于从句?

宾语从句中 当that不做任何成分时 可省 不然就不行

they are afraid (that)I'll live alone.(that)可省.

可以省略!THAT之后是宾语从句.语法上说,这叫形容词的宾语从句!类似的还有.
I'm sure he will come.