内容正文:
Grammar(第四课时)
1.表示时间的介词
介词at、in、on表示时间的用法:
(1) at常用在某一时刻、三餐、年龄,以及正午、午夜、周末、某个特定的节日(不止一天)等单词前。例如:
at 7:30 at breakfast/lunch/supper at six/at the age of six at weekends at Christmas
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(2) on常用在星期几、日期、具体某一天的上午、下午、晚上,以及特定的节日(一天)单词前。例如:
on Monday/Tuesday... on 9 June
on Sunday morning/on a cold evening/on the afternoon of May 5th
on Teachers’ Day
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(3)in常用在一天的上午、下午、晚上,季节,以及某月、某年的单词前。例如:
in the morning/afternoon/evening
in January/February...
in spring/summer...
in 1998/2021...
【注意】在last、next、every等词前面既不加介词,也不用冠词。例如:
every Monday, next Friday, last Sunday
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【即时训练】
Zhong Nanshan gave a talk for primary and middle school students
across the country in the The First Lesson ___ September 1, 2020.
B
A.in B.on C.at
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2.频度副词
表示动作发生的频率的副词称为频度副词。频度副词按表示的频率由小到大依次为:never(0%)→seldom(20%)→sometimes(40%)→often(60%)→usually(80%)→always(100%)
(1) 在句中的位置:一般放在be动词、情态动词或助动词之后,行为动词之前。例如:
My father is always very busy. 我父亲总是很忙。
Sally often walks to school. 萨莉经常步行去学校。
I will never change my mind. 我永远不会改变主意。
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(2) 对频度副词的提问:常用how often,意为“多久一次”。例如:
I usually have bread and milk for breakfast. (对画线部分提问)
→How often do you have bread and milk for breakfast?
【拓展】回答how often引起的疑问句时一般用表示频率的词或短语,如always、usually、 often、sometimes、never、every day、once a week、twice a month等。
【即时训练】
My grandpa ___ sleeps late. He often walks along the lake at 6
o’clock in the morning.
C
A.always B.often C.seldom
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3.Sandy doesn’t have much time to play tennis. 桑迪没有太多时间打网球。
have time to do sth意为“有时间做某事”,与have time for sth同义。例如:
I don’t have time to play computer games.
=I don’t have time for computer games. 我没有时间玩电脑游戏。
【拓展】类似短语:have money to do sth意为“有钱做某事”,相当于have money for sth。
【即时训练】 I have money _______(buy) these books.
to buy
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基础达标
一、选用介词at、on或 in填空。
1.In Beijing, it