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5)表示"年代",用 in +the +数词复数;
二、序数词
1)序数词主要用作定语,前面要加定冠词,例如:
The first truck is carrying a foot baskets.
2)序数词有时前面可加不定冠词来表示“再一”,“又一”这样的意思,例如:
We'll have to do it a second time.
3) 注意较为容易拼写错误的序数词及其缩写形式:one---first, two---second, three---third, five---fifth, eight---eighth, nine---ninth, twelve---twelfth。
学生举例并读出年,月,日,时刻
多给出几组数字
学生要牢记序数词的用法
缩写形式:first→1st second→2nd third→3rd fourth→4th twenty-second→22nd
4) 表示分数时,分子用基数词表示,分母用序数词表示。分子大于1时,分母加-s。例如:
three fourths, one second, two fifths
2、难点
倍数表示法
主语+谓语+倍数(或分数)+ as + adj. + as
I have three times as many as you. 我有你三倍那么多。
3、易错点
We will have a _________ holiday after the exam.
A. two month B. two-month C. two month’s D. two-months
答案: B (选择C的同学要注意应用two months’; 选择D的同学要注意名词之间有 “— “ 后的组合词当作形容词来用, 因此就不用所有格形式了.)
._______ trees are cut down in the forests every year.
A. Thousand B. Thousands C. Thousand of D. Thousands of
答案: D. (选择C的同学注意词组记忆的准确性)
Our sports meeting will be held ________.
A. on 24, Tuesday, April B. in April 24, Tuesday
C. on Tuesday, April 24 D. in April Tuesday 24
答案: C. (选B的同学是受到中文的影响,要特别注意中英文的差异)
May 20th,2002,the twentieth of May,2002
注意:带有数词的名词作定语时,一般用单数形式