some type of 和 some types of 有何区别?(见下题)
问题描述：
some type of 和 some types of 有何区别?(见下题)
Because fuel supplies are finite and many people are wasteful,we will have to install (some type of/some types of)solar heating device in our home.
我认为应该选择some types of 答案是some type of
答
some type of , some这里不强调复数,更多指的是某类