一、a number of ,the number of
a number of 意思是"許多",相當於a lot of ; the number of意思是"……的數目,……的數量",當它作主語時,謂語動詞用單數形式。
A number of students like playing computer games.
The number of the students is about 1500 in our school.
我們學校學生的人數大約是1500。
二、基數詞變序數詞助記歌。
基變序,有規律,末尾加上th;一、二、三特殊記,八加h ,九去e ,ve要用f替;以e結尾變ie,後跟th莫忘記。要想表示幾十幾,只變個位就可以。
特殊變化:one-first ,two-second ,three-third ,five-fifth ,
nine-ninth ,twelve-twelfth ,forty-fortieth ,
eight-nine-eighty-ninth
三、概數(略數)表達法
數詞+hundred/thousand/million/billion+名詞複數
hundreds/thousands/millions/billions of+名詞複數
例1
1. __people go swimming in summer in Dalian.
A、Thousands B、Thousand of C、Thousands of D、Thousand
2. __the students will take part in this English speech contest.
A. Two hundred of B. Two hundreds of C. Hundreds of D. Hundred of