在英語(yǔ)中,如果要表示兩本書,三個(gè)學(xué)生,四把椅子這些兩個(gè)或兩個(gè)以上的概念時(shí),要用名詞的復(fù)數(shù)形式.
詞形變化規(guī)則
1 規(guī)則變化的復(fù)數(shù)形式
a 一般情況下 加 –s
book—books pen—pens girl—girls
b 以s,x,ch,sh,o 結(jié)尾的加-es
bus—buses box—boxes watch—watches dish—dishes tomato-- tomatoes
c 以輔音字母加 y 結(jié)尾的單詞把y 變成I 加 –es
city—cities country—countries baby—babies
d 以f 或fe 結(jié)尾的 去掉f 或fe.變成v 加-es
leaf—leaves knife—knives life-- lives
2不規(guī)則變化的復(fù)數(shù)形式
a 元音發(fā)生變化:man—men woman—women foot—feet tooth—teeth mouse –mice
b 詞尾發(fā)生變化:child—children
c 單復(fù)數(shù)形式相同:fish—fish deer—deer sheep—sheep
練習(xí)
I 請(qǐng)用括號(hào)中名詞的復(fù)數(shù)形式填空
1 Look at those _______.(child)
2 I can see a __________ standing near the door.(policeman)
3 Do you want some ________ for dinner?(potato)
4 In autumn,you can see a lot of _______ on the ground.(leaf)
5 He has two _______.One is blue ,the other is yellow.( box)
6 Two ________ live in this building .( family )
II 選擇正確的詞形
1 How many (radioes,radios) can you see?
2 There are 36 (boys,boies) in my class.
3 Look at those (sheeps,sheep).
4 I don’t want (a,an) old cup.
5 Give me that (box,boxes),please.
III 將以下單復(fù)數(shù)句進(jìn)行轉(zhuǎn)換
1 This is a knife.______________________________________
2 That is a tomato.______________________________________
3 That child is very good._____________________________________
4 These are mice.______________________________________
5 Those are children.______________________________________