初一英語(yǔ)詞匯復(fù)習(xí):數(shù)詞小結(jié)(一)
在學(xué)完定語(yǔ)從句之后,同學(xué)們會(huì)接觸到的另一個(gè)語(yǔ)法項(xiàng)目是數(shù)詞。表示數(shù)目、多少和順序先后的詞叫數(shù)詞。數(shù)詞有兩種:表示數(shù)目多少的數(shù)詞叫基數(shù)詞,如:one,ten twenty-three;表示順序先后的數(shù)詞叫序數(shù)詞,如:first,third,twentieth。
1.基數(shù)詞
基數(shù)詞相當(dāng)于名詞,在句中可做主語(yǔ)、表語(yǔ)、定語(yǔ)、狀語(yǔ)等。如:
Three of my classmates are from Shanghai.
I am twenty this year.
They have four classes in the morning and three in the afternoon.
2.序數(shù)詞
1)序數(shù)詞的構(gòu)成:
★大多數(shù)的序數(shù)詞是由基數(shù)詞加-th構(gòu)成。如:seven―seventh;ten―tenth
★以-t結(jié)尾的基數(shù)詞只在詞尾加-h。如:eight―eighth
★以-ve結(jié)尾的基數(shù)詞改-ve為f再加-th。如:five―fifth;twelve―twelfth
★以-y結(jié)尾的基數(shù)詞改-y為-ie再加-th。如:twenty―twentieth,thirty―thirtieth
★幾十幾的序數(shù)詞只在個(gè)位數(shù)體現(xiàn)。如:twenty-one―twenty-first;thirty-three―thirty-third
★特殊的序數(shù)詞:
one―first;two―second;three―third; nine―ninth
2)序數(shù)詞在句中同樣可做主語(yǔ)、表語(yǔ)、定語(yǔ)、狀語(yǔ)等。如:
June the first is Childrens Day.
When did you first meet each other?
She was the last to arrive.
3.數(shù)詞的用法:
1)表示年、月、日,年用基數(shù)詞,日用序數(shù)詞。如:May eleventh,2007
2)表示時(shí)間。如: Its eleven twenty.
3)表示編號(hào)。編號(hào)既可以用基數(shù)詞表示,也可以用序數(shù)詞表示。區(qū)別是基數(shù)詞用在名詞之后,序數(shù)詞位于名詞之前,并加定冠詞。如:Lesson Nine;the Ninth Lesson
4)介詞 in ones+整數(shù)數(shù)詞的復(fù)數(shù)形式,表示年齡。如:
She is in her early forties.(她四十出頭。)
5)序數(shù)詞前加冠詞a表示再一次。如:Can I try a second time?
6)在hundred,thousand,million,billion前有數(shù)詞時(shí)為實(shí)數(shù)意義,它們的詞尾不能加復(fù)數(shù)。前無數(shù)詞時(shí)為虛數(shù)意義,hundred,thousand,million,billion可加復(fù)數(shù),并可和of連用,構(gòu)成短語(yǔ)。如:five hundred students;millions of people
相關(guān)閱讀:
初一英語(yǔ)詞匯復(fù)習(xí):數(shù)詞小結(jié)(二)
初一英語(yǔ)詞匯復(fù)習(xí):數(shù)詞小結(jié)(三)
在學(xué)完定語(yǔ)從句之后,同學(xué)們會(huì)接觸到的另一個(gè)語(yǔ)法項(xiàng)目是數(shù)詞。表示數(shù)目、多少和順序先后的詞叫數(shù)詞。數(shù)詞有兩種:表示數(shù)目多少的數(shù)詞叫基數(shù)詞,如:one,ten twenty-three;表示順序先后的數(shù)詞叫序數(shù)詞,如:first,third,twentieth。
1.基數(shù)詞
基數(shù)詞相當(dāng)于名詞,在句中可做主語(yǔ)、表語(yǔ)、定語(yǔ)、狀語(yǔ)等。如:
Three of my classmates are from Shanghai.
I am twenty this year.
They have four classes in the morning and three in the afternoon.
2.序數(shù)詞
1)序數(shù)詞的構(gòu)成:
★大多數(shù)的序數(shù)詞是由基數(shù)詞加-th構(gòu)成。如:seven―seventh;ten―tenth
★以-t結(jié)尾的基數(shù)詞只在詞尾加-h。如:eight―eighth
★以-ve結(jié)尾的基數(shù)詞改-ve為f再加-th。如:five―fifth;twelve―twelfth
★以-y結(jié)尾的基數(shù)詞改-y為-ie再加-th。如:twenty―twentieth,thirty―thirtieth
★幾十幾的序數(shù)詞只在個(gè)位數(shù)體現(xiàn)。如:twenty-one―twenty-first;thirty-three―thirty-third
★特殊的序數(shù)詞:
one―first;two―second;three―third; nine―ninth
2)序數(shù)詞在句中同樣可做主語(yǔ)、表語(yǔ)、定語(yǔ)、狀語(yǔ)等。如:
June the first is Childrens Day.
When did you first meet each other?
She was the last to arrive.
3.數(shù)詞的用法:
1)表示年、月、日,年用基數(shù)詞,日用序數(shù)詞。如:May eleventh,2007
2)表示時(shí)間。如: Its eleven twenty.
3)表示編號(hào)。編號(hào)既可以用基數(shù)詞表示,也可以用序數(shù)詞表示。區(qū)別是基數(shù)詞用在名詞之后,序數(shù)詞位于名詞之前,并加定冠詞。如:Lesson Nine;the Ninth Lesson
4)介詞 in ones+整數(shù)數(shù)詞的復(fù)數(shù)形式,表示年齡。如:
She is in her early forties.(她四十出頭。)
5)序數(shù)詞前加冠詞a表示再一次。如:Can I try a second time?
6)在hundred,thousand,million,billion前有數(shù)詞時(shí)為實(shí)數(shù)意義,它們的詞尾不能加復(fù)數(shù)。前無數(shù)詞時(shí)為虛數(shù)意義,hundred,thousand,million,billion可加復(fù)數(shù),并可和of連用,構(gòu)成短語(yǔ)。如:five hundred students;millions of people
相關(guān)閱讀:
初一英語(yǔ)詞匯復(fù)習(xí):數(shù)詞小結(jié)(二)
初一英語(yǔ)詞匯復(fù)習(xí):數(shù)詞小結(jié)(三)