How many pencils do you have? 你有多少支鉛筆？

(1)how many是“多少，幾個(gè)”的意思。how many用來(lái)修飾可數(shù)名詞的復(fù)數(shù)，它的句式是：How many + 復(fù)數(shù)名詞 + 一般疑問(wèn)句+?

(2)how many的用法：

對(duì)there be句型中主語(yǔ)的數(shù)量如：some, five, only one等提問(wèn)時(shí)，如果主語(yǔ)是可數(shù)名詞，不管主語(yǔ)是單數(shù)還是復(fù)數(shù)一般都用復(fù)數(shù)形式提問(wèn)，因?yàn)閱?wèn)話(huà)人不知道具體的數(shù)量是多少，而且many只能接可數(shù)名詞復(fù)數(shù)形式，所以be一定要用are，即用“how many + 可數(shù)名詞復(fù)數(shù) + are there + 地點(diǎn)/時(shí)間狀語(yǔ)?”的句型結(jié)構(gòu)。

e.g. There is a book on the desk.(用how many改為特殊疑問(wèn)句)

How many books are there on the desk?

There are seven days in a week.(對(duì)劃線部分進(jìn)行提問(wèn))

How many days are there in a week?

(3)記憶口訣

how many在句首，名詞復(fù)數(shù)跟著走，一般問(wèn)句緊相隨，其它成分不要丟。