内容正文:
第五讲 介词和数词
【课程解读】
————小学初中课程解读————
小学课程
初中课程
小学英语中,介词需要掌握含有时间介词的固定搭配. 数词部分需要掌握基数词和序数词的基本构成形式.
初中英语中,介词部分除了时间介词外需要掌握地点介词,方位介词,易混介词辨析. 数词除了基数词和序数词的基本构成外还需要掌握用法还有分数的表达方法.
【知识衔接】
————小学知识回顾————
介词
介词用来表示名词、代词之间的关系.
介词通常放在名词或代词前, 构成介词短语.
1、表示时间的介词
1)at
①用于时刻, 钟点前
at noon 在中午 at night 在夜晚
I go to school at seven every day 我每天早上7点去上学
②用于固定搭配.
at once 立刻、马上 at the same time 同时 not at all 一点也不
at noon 在中午 at night 在夜晚 at the age of在……岁时
at the end of在……结束时 at last最后 at first=first of all起初, 首先
2)on
①用于星期前, 用于具体某一天或某一天的上午、下午、晚上前, 也可用在公共节假日前.
on Monday/Tuesday.... on a cold morning在一个寒冷的早上
on Teachers’ Day on September 1st
②用于某些固定搭配: on duty 值日 on time 准时
3)in
①用在世纪、年代、月份、四季前.
in 1840 in the 21st century在21世纪
in spring/summer/autumn/winter在春夏秋冬
in January in the morning/afternoon/evening在早上/下午/晚上
数词
基数词
0-12 zero one two three four five six seven eight nine ten eleven twelve
13-19 thirteen fourteen fifteen sixteen seventeen eighteen nineteen
20-99 twenty twenty-one twenty-two twenty-three twenty-four twenty-five twenty-six
twenty-seven twenty-eight twenty-nine thirty forty fifty sixty seventy eighty ninety
100及以上 one hundred one hundred and one one hundred and two
数字的英文读法
hundred thousand million billion
284 two hundred and eighty-four
5599 five thousand five hundred and ninety-nine
3758590 three million seven hundred and fifty-eight thousand five hundred and ninety
72893934900 seventy-two billion eight hundred and ninety-three million nine hundred and thirty-four thousand and nine hundred
注意
three hundred five thousand eight million several thousand
hundreds of 数以百计的,成百上千的
thousands of 数以千计的,成千上万的
millions of 数百万的,成百上千万的
billions of 数十亿的
序数词
first second third
fourth fifth sixth
seventh eighth ninth ten