这个问题太笼统了,能说的详细点吗?
看定语从句中缺少什么成分来决定关系词的选择,而it是人称代词,作主语或者宾语.但是从句中关系代词作主语和宾语时就不能使用it了.
如：正确：The pen which I bought yesterday is blue.
错：The pen which I bought it yesterday is blue.
这个问题太笼统了,能说的详细点吗?
看定语从句中缺少什么成分来决定关系词的选择,而it是人称代词,作主语或者宾语.但是从句中关系代词作主语和宾语时就不能使用it了.
如：正确：The pen which I bought yesterday is blue.
错：The pen which I bought it yesterday is blue.