It is often the case that we need to convert between arrays and collection types.
问题描述：
It is often the case that we need to convert between arrays and collection types.
这句话能不能改成
It is often that wo need to convert between a and b.
答
可以 that引导表语从句原句到底是定语从句，还是同谓语从句？正是我认为 convert 可以当不及物动词 用我才说 可以。我认为原句是同位语从句。如果是 及物动词 则是定语从句 ，从句缺宾语 ，就不可以。