Exercise
Ⅰ. 用a和an填空。
Ⅰ. 请写出下列动词的第三人称单数形式。
1. lock 2. ski 3. teach
4. mix 5. study 6. cry
7. guess 8. buy 9. go
10. wash
Ⅱ. 根据陈述句的划线提示，在疑问句中填入适当的单词（每空限填一词）。
1. John usually __________ (play) basketball in the afternoon. 21cnjy.com
2. __________ you __________ (stay) at home at the weekend?21·cn·jy·com
3. The Earth __________ (move) around the Sun.
4. My mother often __________ (teach) me how to do the housework.
5. —Does he __________ (speak) German?
—Yes, but only a little.
Ⅲ. 单项选择。
( ) 1. —What __________ your parents do?
—My father __________ as an engineer and my mother __________ a nurse.
A. do; works; is B. are; is; works C. do; work; is D. does; are; work
( ) 2. —Why do you __________ so late every evening? It’s not good for your health.
—Because I __________ have much homework to do.
A. get up; never B. go to bed; always
C. get up; seldom D. go to school; sometimes
( ) 3. I often __________ baseball. But my sister __________ to play it at all.
A. plays; doesn’t likes B. play; don’t like
C. play; doesn’t like D. plays; don’t likes
( ) 4. —__________ you and Tom in the same class?21世纪教育网版权所有
—No. He __________ in Class 2.
A. Is; is B. Does; does C. Do; do D. Are; is
( ) 5. Our school life __________ at 7:40 in the morning and __________ at 5:40 in the afternoon. 21教育网
A. begin; end B. end; begin C. begins; ends D. ends; begins
Keys
Ⅰ.
1. locks 2. skis 3. teaches 4. mixes 5. studies
6. cries 7. guesses 8. buys 9. goes 10. washes
Ⅱ.
1. plays 2. Do; stay 3. moves 4. Teaches 5. speak
Ⅲ.
1-5 ABCDC
Grammar
一、特殊疑问句
(一) 一般现在时
1. 当谓语动词为实义动词时：
肯定句: I play the guitar. 否定句: I don’t play the guitar. 21cnjy.com
We play the guitar. We don’t play the guitar.
They play the guitar. They don’t play the guitar.
He plays the guitar. He doesn’t play the guitar.
She plays the guitar. She doesn’t play the guitar.
It plays the guitar. It doesn’t play the guitar.
一般疑问句: Do you play the guitar? 回答: Yes, I do. /No, I don’t.
Do we play the guitar? Yes, we do. /No, we don’t.
Do they play the guitar? Yes, they do. /No, they don’t.
Does he play the guitar? Yes, he does. /No, he doesn’t.
Does she play the guitar? Yes, she does. /No, she doesn’t.
Does it play the guitar? Yes, it does. /No, it doesn’t.
2. 当谓语动词为be动词时：
肯定句: I am a student now. 否定句: I am not a student now. 21教育网
He is a student now. He isn’t a student now. 2·1·c·n·j·y
We are students now. We aren’t students now. 【来源：21·世纪·教育·网】
一般疑问句: Are you a student now? 回答: Yes, I am. /No, I’m not.
I she a student now? Yes, he is. /No, he isn’t. 21·世纪*教育网
Are you students now? Yes, we are. /No, we aren’t.
3. 主语是第三人称单数时，动词的变化规则：
(1) 直接加-s 如：completes, rides, rings, ends
(2) 以s、x、ch、sh结尾，一般加-es 如：guesses, fixes, teaches, washes
(3) 辅音字母加o结尾，一般加-es 如：goes
(4) 辅音字母加y结尾，变y为i加-es 如：carries, cries, studies, flies
(5) 特殊情况如：have—has, be—is
(二) 频度副词和副词短语的使用
1. 使用频度副词时一般把它放在实义动词前，be动词后：
My mother always cooks breakfast for me in the morning. 21·cn·jy·com
Tom seldom goes to school late.
Jim is sometimes late for school.
常见的频度副词有：always (总是)，usually (通常)，often (常常)，sometimes (有时)，
seldom (很少)，never (从不)
它们发生的频率如下图所示：
2. 使用频度副词短语时常把它放在句末，有时也可放在句首：
My father goes to work on foot every day.
My grandparents live in Huizhou. I visit them once a month. 21世纪教育网版权所有
常见的频度副词短语有：every day (每天)，once a week (一周一次)，twice a week (一周两次)，www.21-cn-jy.com
All the time (一直)，?ve times a year (一年五次)，at the weekend (在周末)，everynight/year/month... (每晚/每年/每月)
