哪些动词后通常只用 whether
问题描述：
哪些动词后通常只用 whether
答
一、相同之处.1.whether和if都能引导宾语从句,常置于see,ask,learn,tell,wonder,doubt,find out等动词之后.如：He asked me whether/is I could help him.I want to know whether/if he lives there.2.whether和if都...