内容正文:
Unit 7 How much are these socks?(语法讲练)
【知识导图】
【要点拓展】
1.在表示一个具体的数目时,hundred、thousand、million、billion后面都不能加-s。如:two hundred、seven million等。在表示一个不确定的数目时,应用hundreds、thousands等加介词of。
Hundreds of people were reported killed or wounded.据报告有几百人伤亡。
There are thousands of things I want to do.我有很多事情想做。
2.时刻表达
(1)几点整:基数词+o'clock 如:7/seven o'clock七点
(2)差几分到几点:分钟数>30时,用“60-分钟”+to+“小时+1” 如:five to nine=8:55
(3)几点过几分:分钟数≤30时,用“分钟+past+小时” 如:fifteen past nine=9:15
3.年龄表达
(1)表示“整岁数”,可用“基数词、基数词+years+old或at the age of+基数词”表达。如:nine九岁、six years old六岁、at the age of ten十岁
(2)表示“整岁的”,可用“基数词-year-old+可数名词单数”表达。如:a ten-year-old girl一个十岁的女孩
(3)表示“大概年龄”,可用“in+one's+整十基数词的复数形式”表达。如:in his eighties在他80多岁的时候
4.年代表达
年代:the+整十“年份”+s/'s 如:the1990s20世纪90年代
5.分数、百分数、倍数表达
(1)分数表达。分子用基数词,分母用序数词;分子>1,分母变复数形式 如:one fifth1/5、four fifths 4/5
(2)百分数表达。基数词+percent(%) 如:eighty percent 80%
(3)倍数表达。倍数为1,用once;倍数为2,用twice/double;倍数≥3,用“基数词≥3+times”如:three times三倍
6.表示“再、又”
(1)another+基数词+可数名词复数 如:another two apples
(2)基数词+more+可数名词复数 如:two more apples
【奇思巧计】
基数词构成记忆口诀
基数词并不难,12以内形各异;
13到19,结尾均是-teen;
20到90,尾随-ty就可以;
几十几有“-”,莫忘记。
【同步检测】
一、单项选择
1.Now, everyone, please turn to Page ______.
A.Five B.five C.the five
2.—Excuse me, what’s the time now?
—It’s 8:45.
—You mean “________”?
A.a quarter to nine B.a quarter to eight C.a quarter past eight D.a quarter past nine
3.My student ID number is 50659. It reads (读作) ________.
A.four zero six four nine B.five o six four nine
C.four o six four nine D.five zero six five nine
4.I have ________ pens. Two are black and four are blue.
A.two B.four C.six D.eight
5.—What is twenty and thirty?
—It’s ________.
A.forty B.fifty C.sixty
6.I will give you ________ days to finish the work.
A.other four B.another three C.more two D.one another
7.—Mom, are the ________ oranges for me?
—No. This one is for you. These five are for your dad and me.
A.three B.four C.five D.six
8.There are ________ people in her family. They’re her father, her mother, her brother and her.
A.three B.four C