名词复数的特殊变化。
普通名词的复数我们知道是直接加-s或 -es,
a. class, box, watch, brush等词以 s, x, ch, sh, 结尾,复数要加-es;
b. story, factory 等以"辅音字母+y"结尾的词复数要先将-y 变成-i再加-es;
c. knife, wife, life等以-f 或-fe结尾的词一般先将-f或-fe变为-v, 再加-es;
d. 以-o结尾的名词,一般来说,末尾是"元音字母+o" 的词加-s,我们学过的有radio,zoo。末尾是"辅音字母+o"的词,变复数加-es。如:tomato, hero, potato,当然其中的piano 和photo,又是一个例外,他们的结尾只能加-s。
e. child(children), foot(feet), tooth(teeth), mouse(mice), man(men ), woman(women )等词的复数变化全不遵循规则。
注意:与 man 和 woman构成的合成词,其复数形式也是 -men 和-women。如:an Englishman,two Englishmen. 但German不是合成词,故复数形式为 Germans;
f. deer,sheep等词单复数同形。 people,police,cattle 等词,以单数形式出现,但实为复数,所以它们的谓语当然也是复数形式,这就是集体名词。the English,the French,the Chinese等名词表示国民总称时,也作复数用。
注意:maths,politics,physics等学科名词,虽然以-s结尾,仍为不可数名词。还有theUnited States(美国),the United Nations(联合国)等应视为单数。
别奇怪,名词有时也可以作定语的。它作定语时一般用单数,但也有以下例外。
a. man, woman等作定语时,它的单复数以其所修饰的名词的单复数而定。如:men workers, women teachers。
b. 数词+名词作定语时,这个名词一般保留单数形式,中间加连字符。如:a ten-mile walk十里路,two-hundred trees 两百棵树。
人教版英语八下Unit 9《Have you ever been to a museum》课件包1
2014人教新目标英语八下unit 10《I’ve had this bike for three years》section b 3a-3b(含self check)课件
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人教版英语八下Unit 9《Have you ever been to a museum》(Section A 2b)课文朗读
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2014人教新目标英语八下unit 10《I’ve had this bike for three years》section b课件
2014人教新目标英语八下unit 10《I’ve had this bike for three years》section b 1c课本听力素材(mp3)
人教版英语八下Unit 9《Have you ever been to a museum》(Section A 3a)课文朗读
2014人教新目标英语八下unit 1《What’s the matter》section a 1a-2d课件
2014人教新目标英语八下unit 1《What’s the matter》section b 1c课本听力素材(mp3)
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2014人教新目标英语八下unit 10《I’ve had this bike for three years》课件
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2014人教新目标英语八下unit 10《I’ve had this bike for three years》课件3
2014人教新目标英语八下unit 3《Could you please clean your room》section a 2a课本听力素材(mp3)
2014人教新目标英语八下unit 3《Could you please clean your room》section a 1a-2d课件
2014人教新目标英语八下unit 1《What’s the matter》section b 3a-3b(含self check)课件
2014人教新目标英语八下unit 10《I’ve had this bike for three years》words单词听力朗读素材(mp3)
2014人教新目标英语八下unit 10《I’ve had this bike for three years》课件1
2014人教新目标英语八下unit 10《I’ve had this bike for three years》section b1课件
2014人教新目标英语八下unit 1《what’s the matter》sectionb 2a-2e课件
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