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小学的英语词组和对话中都会牵扯到语法了呢!今天小编来给大家讲讲小学英语语法,本文是“小学英语语法之基数词在什么时候加s”一起来看看做做保存下来吧!
基数词在用来表示准确数字的情况下不能加复数后缀s。以下基数词可以加复数后缀s,因为它们表达的都是大概的数字。
1.thousands of / millions of / hundreds and hundreds of / hundreds of thousands of / thousands upon thousands of 成千上万
例:There are hundreds of thousands of people in the park. 公园里的人有千百个。
2. in twos and threes 三三两两
例:They came home from church by twos and threes. 他们三三两两地从教堂回来。
3. at sixes and sevens 乱七八糟
例:His wife was away and the house was at sixes and sevens. 他妻子不在,家里乱七八糟的。
4. in ones fifties 在五十多岁时(fifties 前可插入 early, late, mid-, middle)
例:The boys are all in their teens. 那些男孩年纪都在十几岁。
Jane is only in her early forties. 简才刚刚四十出头。
She was in her mid-twenties. 她有二十五、六岁。
He was then in his late seventies. 他当时已经快八十岁了。
5. in the 1960s (in the 1960s) 二十世纪六十年代
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小一至小五年级期末试题答案