内容正文:
7AU4Grammar知识清单与课时配套练习
知识清单详解
一、表示时间的介词(Prepositions of time)
(一)in 的用法
• 用于年、月、季节以及一天中的上午、下午、晚上等时间段前。
◦ 年:in 2022(在 2022 年)。
◦ 月:in July(在七月)。
◦ 季节:in spring(在春天)。
◦ 一天中的时段:in the morning(在早上)。
(二)on 的用法
• 用于具体的某一天或某一天的上午、下午、晚上,以及特定的节日等。
◦ 具体日期:on March 7th(在 3 月 7 日)。
◦ 某一天的时段:on Sunday morning(在周日上午)。
◦ 特定节日:on Children's Day(在儿童节)。
(三)at 的用法
• 用于具体的某一时刻、中午、午夜或年龄等。
◦ 时刻:at 7 o'clock(在 7 点)。
◦ 年龄:at 6 years old(在 6 岁时)。
二、频度副词(Adverbs of frequency)
(一)含义与频率程度
频度副词
含义
频率程度(大致)
always
总是
100%
usually
通常
80%
often
经常
60%
sometimes
有时
40%
seldom
很少
20%
never
从不
0%
(二)在句中的位置
• 一般放在行为动词之前,be 动词、助动词或情态动词之后。
◦ 行为动词前:He often plays football.(他经常踢足球。)
◦ be 动词后:She is always happy.(她总是很开心。)
◦ 助动词后:We do not often go to the cinema.(我们不经常去看电影。)
◦ 情态动词后:She can sometimes win in a match.(她有时能在比赛中获胜。)
• 有时为了表示强调,会把 usually、always、often、sometimes 等频度副词放在句首;有时还会把 often 放在句末,这时可用 very 或 quite 来修饰 often。
◦ 句首:Sometimes I get home very late.(有时我回家很晚。)
◦ 句末:I love sweets, but Mum doesn't let me have them very often.(我爱吃甜食,可妈妈不让我常吃。)
(三)对频率进行提问
• 用 how often 来对频率进行提问。
◦ 例句:—How often do you watch TV?(你多长时间看一次电视?)—I seldom watch TV.(我很少看电视。)
课时配套练习
一、单项选择
1. We have a PE class ____ the afternoon.
A. in B. on C. at D. for
2. My birthday is ____ May 5th.
A. in B. on C. at D. to
3. He gets up ____ 6:30 every morning.
A. in B. on C. at D. for
4. She ____ goes to the library. She loves reading.
A. seldom B. never C. always D. sometimes
5. —____ do you play basketball?
—Twice a week.
A. How long B. How soon C. How often D. How much
6. He ____ late for school. He is a good student.
A. always B. usually C. often D. never
7. We usually have dinner ____ 7 p.m.
A. in B. on C. at D. for
8. They have a trip ____ summer.
A. in B. on C. at D. for
9. She is ____ happy.
A. always B. never C. seldom D. sometimes
10. —When is the party?
—____ Friday evening.
A. In B. On C. At D. For
二、用适当的频度副词填空
1. I ____ get up at 6:00 a.m.(总是)
2. He ____ plays computer games. He doesn't like it.(从不)
3. They ____ go to the park on weekends.(有时)
4. She ____ helps her mother with housework.(经常)
5. He ____ goes swimming. He is busy.(很少)
答案
一、1. A 2. B 3. C 4. C 5. C 6. D 7. C 8. A 9. A 10. B二、1. always 2. never 3. sometimes 4. often 5. seldom
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