1、1行为动词一般现在时的变化我们这里所说的行为动词,指的是除 be 动词、情态动词和助动词之外的全部动词。行为动词为数众多,主语为第三人称单数 he, she, it 时, 词形有变化。当主语是第三人称单数时，行为动词的一般现在时通常有三种变化：1、 多数在动词后加 s playplays likelikes read-reads sing-sings dance-dances cook- cooks look- looks2、 以 s，x，sh，ch，o 结尾的动词加 es gogoes washwashes watch-watches catch-catches do- does3、 以辅音
2、字母加 y 结尾，把 y 改 i 再加 es flyflies studystudies try-tries (这种变化与名词的单数变复数有点相像)那么，什么情况下用行为动词的一般现在时呢？当这个动作经常发生或表示习惯性的动作时，通常用一般现在时，它经常与表示频度的时间状语连用，如，当句子中有 every day every year ,on Sunday, in the morning ,often, sometimes, usually, at one oclock 等词时，用一般现在时。例句：He gets up at 6 oclock. She usually watches TV i
3、n the evening.Sometimes he goes to school by car. 2Tom often flies a kite on Sunday.只有第三人称单数动词才要变，其他人称（I, you ,we ,they）则用动词的原形。行为动词的一般现在时练习题班级 姓名 座号 写出下列动词的正确形式：1、I (go) to school at seven in the morning.2. Mike ( do) his homework at eight in the evening.3. His father often ( read) books in the lib
4、rary on Saturday.4.My mother usually (watch) TV plays at home.5. My cousin sometimes (play ) cards with me.6. you often (study ) after school ?Yes , I do.7. Mike and Tom usually (fly ) kites on Sunday.8. They (go) to school by bus every day.9. She (go ) to school by bus every day. 10.We usually (listen ) to the radio in the morning.11. He usually (listen ) to the radio in the morning.12. he usually (listen ) to the music at home? No, he .
