你把例句打出来追问,我给你详解.Is this coat_____?A she wanted forbirthdaypresentB which she wanted for birthday presentC one she wanted for birthday presentD the one she wanted for birthday presentD还有一个例句呢？对的。我一开始选b。把他看成 this is coat +定语从句。有什么区别，怎么区分。您细讲一下。谢谢this is coat怎么可能会有这种说法呢？要不就是this is a coat要不就是this is the coat总之缺少了冠词。还有一个例句，我继续给你讲解。This is the coat (that/which) she wanted for birthday present.=This coat is the one (that/which)she wanted for birthday present.区分就是冠词的问题。题目改为Is this the coat_____?就选AB。