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八年级英语Chapter 4语法重难点讲解1,
数词是表示数目多少或顺序先后的词。
数词的种类: 基数词和序数词。
1. 基数词的构成
1-12 单独记: one, two, three , four, five, six, seven, eight, nine, ten, eleven, twelve
13-19词尾为-teen. e.g: thirteen, fourteen, fifteen
20, 30, 40逢十词尾为ty, twenty, thirty, forty
21-99在十位数和个位数之间加连字符构成。Eg: 73 seventy-three , 88 eighty-eight
101-999光说几百,再加and,再加末尾两位数。
Eg: 178 one hundred and seventy-eight
238 two hundred and thirty-eight
1000 以上的数词,先从后向前数, 每三位用一逗号隔开
第一个逗号表示thousand(千), 第二逗号表示million(百万), 第三个逗号表示billion(十亿),然后一节一节用几百几十几的方法。
Eg: 1004 one thousand and four
147258 one hundred and forty-seven thousand , two hundred and fifty-eight
18657421 eighteen million, six hundred and fifty-seven thousand , four hundred and twenty-one
注意:在这类数词中hundred, thousand, million, billion等词一般都用单数形式。
序数词的记忆口诀:
一,二,三要单独记,
One-first, two-second, three-third
th 要从四加起, fourth, sixth,
eight , 少个t, eighth
nine 去掉e, nine-ninth
v 要用f来代替
five-fifth, twelve-twelfth
ty就成tie, twenty-twentieth
若问“几十几“或“几百几“,
只变个位记心里,
twenty-one-twenty-first
重点句子:
1. Please have a seat.请坐。sit (v.) 动词, 意思是坐,seat(n.)意思是座位。
2. pay attention 注意
3. add 3 and 9 ( 3 +9)
4. subtract 3 from 9 (9-3)
5. multiply 3 by 9 ( 3 ×9)
6. divide 9 by 3 ( 9÷3)
7. 3 plus 9 equals/is 12 ( 3+9=12)
8. 9 minus 3 equals/ is 6 (9-3=6)
9. 3 multiplied by 9 equals/is 27( 3×9=27)
10. 9 divided by 3 equals /is 3( 9÷3=3)
重点习题:
1. This is a meeting of the world‘s most ______ ( power, powerful) countries.
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2. I played tennis five ______ ( times, time) last week.
3. The ______ ( alive , living) things can‘t live without air or water.
4. The Chinese ______ ( invented, invention ) the compass.
5. 13 is an ______ ( odd, even) number.
6. He was ______ ( amusing, amused) to hear the news.
7. ______ higher, and you will see the house.
A If you stand B. To stand C. When you stand D. stand
8. ______ forget to wire to me when you _____ get there next Tuesday.
A. Don‘t, will B. Please, will C. Please,/ D. Don‘t,/
9. Could you tell me _____ to do next? Nothing more. Let‘s have a rest.
A. why B. when C. what D. how
10. Tell the boys _____ in the classroom.
A. don‘t make a noise B. not to make noise
C. not to make a noise D. not make a noise
八年级英语Chapter 4语法重难点讲解1
八年级英语Chapter 4语法重难点讲解1
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发布日期:06-12 13:04:24 | 八年级英语教案