初一英語詞匯復習:數詞小結(一)
在學完定語從句之后,同學們會接觸到的另一個語法項目是數詞。表示數目、多少和順序先后的詞叫數詞。數詞有兩種:表示數目多少的數詞叫基數詞,如:one,ten twenty-three;表示順序先后的數詞叫序數詞,如:first,third,twentieth。
1.基數詞
基數詞相當于名詞,在句中可做主語、表語、定語、狀語等。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.序數詞
1)序數詞的構成:
★大多數的序數詞是由基數詞加-th構成。如:seven―seventh;ten―tenth
★以-t結尾的基數詞只在詞尾加-h。如:eight―eighth
★以-ve結尾的基數詞改-ve為f再加-th。如:five―fifth;twelve―twelfth
★以-y結尾的基數詞改-y為-ie再加-th。如:twenty―twentieth,thirty―thirtieth
★幾十幾的序數詞只在個位數體現。如:twenty-one―twenty-first;thirty-three―thirty-third
★特殊的序數詞:
one―first;two―second;three―third; nine―ninth
2)序數詞在句中同樣可做主語、表語、定語、狀語等。如:
June the first is Childrens Day.
When did you first meet each other?
She was the last to arrive.
3.數詞的用法:
1)表示年、月、日,年用基數詞,日用序數詞。如:May eleventh,2007
2)表示時間。如: Its eleven twenty.
3)表示編號。編號既可以用基數詞表示,也可以用序數詞表示。區別是基數詞用在名詞之后,序數詞位于名詞之前,并加定冠詞。如:Lesson Nine;the Ninth Lesson
4)介詞 in ones+整數數詞的復數形式,表示年齡。如:
She is in her early forties.(她四十出頭。)
5)序數詞前加冠詞a表示再一次。如:Can I try a second time?
6)在hundred,thousand,million,billion前有數詞時為實數意義,它們的詞尾不能加復數。前無數詞時為虛數意義,hundred,thousand,million,billion可加復數,并可和of連用,構成短語。如:five hundred students;millions of people
相關閱讀:
初一英語詞匯復習:數詞小結(二)
初一英語詞匯復習:數詞小結(三)
在學完定語從句之后,同學們會接觸到的另一個語法項目是數詞。表示數目、多少和順序先后的詞叫數詞。數詞有兩種:表示數目多少的數詞叫基數詞,如:one,ten twenty-three;表示順序先后的數詞叫序數詞,如:first,third,twentieth。
1.基數詞
基數詞相當于名詞,在句中可做主語、表語、定語、狀語等。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.序數詞
1)序數詞的構成:
★大多數的序數詞是由基數詞加-th構成。如:seven―seventh;ten―tenth
★以-t結尾的基數詞只在詞尾加-h。如:eight―eighth
★以-ve結尾的基數詞改-ve為f再加-th。如:five―fifth;twelve―twelfth
★以-y結尾的基數詞改-y為-ie再加-th。如:twenty―twentieth,thirty―thirtieth
★幾十幾的序數詞只在個位數體現。如:twenty-one―twenty-first;thirty-three―thirty-third
★特殊的序數詞:
one―first;two―second;three―third; nine―ninth
2)序數詞在句中同樣可做主語、表語、定語、狀語等。如:
June the first is Childrens Day.
When did you first meet each other?
She was the last to arrive.
3.數詞的用法:
1)表示年、月、日,年用基數詞,日用序數詞。如:May eleventh,2007
2)表示時間。如: Its eleven twenty.
3)表示編號。編號既可以用基數詞表示,也可以用序數詞表示。區別是基數詞用在名詞之后,序數詞位于名詞之前,并加定冠詞。如:Lesson Nine;the Ninth Lesson
4)介詞 in ones+整數數詞的復數形式,表示年齡。如:
She is in her early forties.(她四十出頭。)
5)序數詞前加冠詞a表示再一次。如:Can I try a second time?
6)在hundred,thousand,million,billion前有數詞時為實數意義,它們的詞尾不能加復數。前無數詞時為虛數意義,hundred,thousand,million,billion可加復數,并可和of連用,構成短語。如:five hundred students;millions of people
相關閱讀:
初一英語詞匯復習:數詞小結(二)
初一英語詞匯復習:數詞小結(三)