最新单词词形变化规则ppt课件.ppt
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1、一、复数(名词):一、复数(名词): 1一般情况下,直接加-s, 如:book-books, bag-bags, cat-cats, bed-beds 2以s. x. sh. ch结尾,加-es,如:bus-buses, box-boxes, brush-brushes, watch-watches 3.以“辅音字母+y”结尾,变y为i, 再加-es,如:family-families, strawberry-strawberries 4以“f或fe”结尾,变f或fe为v, 再加-es,如:knife-knives 5不规则名词复数: man-men, woman-women, policem
2、an-policemen, policewoman-policewomen, mouse-mice child-children foot-feet,. tooth-teeth fish-fish, people-people, Chinese-Chinese, Japanese-Japanese 五比较级和最高级(形容词):五比较级和最高级(形容词): 1.一般在词尾加er/est; 2.以字母e 结尾,加r/st ; 3.以一个元音字母和一个辅音字母结尾,应双写末尾的辅音字母,再加er/st ; 4.以“辅音字母+y”结尾,先把y变i,再加er/st 5.部分双音节词和多音节词,在单词前面
3、加more或most important more important most important difficult more difficult most difficultinteresting more interesting most interesting useful more useful most usefulbeautiful more beautiful most beautiful 6不规则形容词比较级: good/well-better-best bad/ill-worse-worstmany/much-more-most little-less-leastfar-farther-farthest或further-furthest old-older-oldest或elder-eldest late-later-latest或latter-latest12 结束语结束语
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