牛津八年级英语上册知识点整理U1P17基数词
1:基数词变序数词,1,,2,3,5,9,12：one-first two-second three-third five-fifth nine-ninth twelve-twelfth变序数词直接加 th的基数词：4,6,7,10,11,13-19
整十以 y结尾：y-ie + th
几十几变序数词：整十不变个位变序数词

2:百：hundred
千：thousand
万：million
十亿：billion

3:概数的特征：前无后有
确数的特征：前有后无
初一英语练习题
英语单词记忆
英语语法练习题

4:后面用确数的词（三种）：over/more than/about

5:分数的特征：分子为基,分母为序,分子大于 1,分母加 s
//小数：小数点读作 point
//小数点前整数部分整个读
//小数点后单个读
//25,36:twenty-five point three six

6:（瞬间动词变连续性动词或状态）buy：have-has/have had
（瞬间动词变连续性动词或状态）borrow：keep-have/has kept
（瞬间动词变连续性动词或状态）begin：be on-have/has been on
（瞬间动词变连续性动词或状态）leave：be away-have/has been on
（瞬间动词变连续性动词或状态）come：be in-have/has been in
（瞬间动词变连续性动词或状态）join：be in-have/has been in
（瞬间动词变连续性动词或状态）return：be back-have/has been back
（瞬间动词变连续性动词或状态）fall asleep：be asleep-have/has been asleep
（瞬间动词变连续性动词或状态）fall ill：be ill-have/has been ill

7:百分数：percent

8:一月：January
二月：February
三月：March
四月：April
五月：May
六月：June
七月：July
八月：August
九月：September
十月：October
十一月：November
十二月：December

9:星期 1-7：Monday Tuesday Wednesday Thursday Friday Saturday Sunny

10:(风/云/雨/雪/晴/雾)天：windy/cloudy/rainy/snowy/sunny/foggy

11:去了某地还未回：have gone to sp
去了某地已回：have been to sp
从过去到现在，可能还将在某处：have been in sp
例句：王先生已经去了北京还未回来。他会在三天之内回来：Mr Wang has gone to Beijing,He will
be back in 3 days