部分倒裝就是助動詞提前到主語前：其實,就象一般疑問句一樣結(jié)構(gòu).助動詞+主+謂語+……be(是）在這里不是助動詞,但可以當(dāng)作助動詞用have是“有”的意思時,也可以當(dāng)助動詞用.如So many books do you have that I don't ...為什么可以當(dāng)助動詞用呢？這里is既是助動詞又是系動詞？不是助動詞，但可以象助動詞一樣充當(dāng)否定（加not)、疑問（提前到主語前）如：He is a student.He isn't a student.Is he a student?She has a brother.She hasn't a brother.She doesn't have a brother.Has she a brother?=Does she have a brother?(have“有”時，可以直接加not，也可以用do,does來做助動詞。