1）代词及be动词

　　主格 I we you you she/he/it they

　　宾格 me us you you her/him/it them

　　代词所有格 my our your your her/his/its their

　　名词性代词 mine ours yours yours hers/his/its theirs

　　be动词现在时 Am are are are is are

　　be动词过去时 was were were were was were

　　2）名词的复数

　　规则变化的名词复数形式

　　规则1 一般情况+s e.g. shell→shells  toy→toys

　　规则2 以s， x， ch， sh结尾+es e.g. fox→foxes  church→churches

　　规则3 以o结尾+s或+es e.g. radio→radios  potato→potatoes

　　规则4 以f， fe结尾的，变f， fe为ves e.g. life→lives  half→halves

　　规则5 以辅音字母+y结尾， 变y为i+es e.g. sky→skies  study→studies

　　3）动词的第三人称单数形式

　　规则1 一般情况+s e.g. like-likes， look-looks

　　规则2 以s， x， ch， sh和o结尾+es e.g. do-does， catch-catches

　　规则3 以辅音字母+y结尾， 变y为i+es e.g. carry-carries， fly-flies

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