what 后面接不可数名词,或者可数名词的单数.复数.是什么的意思.
What kind of 后面接不可数名词,或者可数名词的单数,解何种,何类,
what subjiect do you want to major in?可以换成:what kind of subject do you want to major in?
what kind of thing will make you feel woreied?(只回答一种)不可以换成:what things will make you feel worried.(可回答多样)