1.人称代词
主格： I we you she he it they
宾格： me us you her him it them
形容词性物主代词：my our your her his its their
名词性物主代词： mine ours yours hers his its theirs
2.形容词和副词的比较
(1) 一般在形容词或副词后+er
older ,taller, longer, stronger
(2) 多音节词前+more
more interesting, etc.
(3) 双写最后一个字母，再+er
bigger fatter, etc.
(4) 把y变i，再+er
heavier, earlier
(5) 不规则变化：
well-better, much/many-more, etc.
3.可数词的复数形式
Most nouns + s abook –books
Nouns ending in aconsonant +y - y+ ies a story—stories
Nouns ending in s,sh, ch or x + es a glass—glasses a watch-watches
Nouns ending in o+s or +es a piano—pianos a mango—mangoes
Nouns ending in for fe - f or fe +ves a knife –knives a shelf-shelves
4.不可数名词（单复数不变）
bread, rice, water ,juice等。
5.缩略形式
I’m= I a， you’re = you are， she’s= she is， he’s = he is
it’s= it is， who’s =who is， can’t =can not， isn’t=is not等。
