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Unit1 How often do you exercise?
Section A
Lange Goal: Talk about how often you do thing .
标题释义:
知识点 1. how often 的用法:
1) how often 是 “多久一次”的意思,常用频率副词(always, usually, often, sometimes, hardly ever,
never), once a week , two or three times a month ,every day等词来回答。如果对这些词划线部分提
问,则用how often.
2) how often 的同义词组是how many times (多少次),所以问句的同义句句是:How many times
do you exercise ?
3) 但是how many times 与how often 的区别是how many times 通常只用 once, twice, three
times 等来回答。
eg. How often does she go to the movies ?
------- Twice a month
How many times do you watch TV every week ?
------- Three times.
4) 补充:
how long 是“多长时间”的意思,回答常用 “for…”或”since …”引导的时间状语。Eg. How long
have you been in America ?
“他在美国多久了”
------- For two years .“两年了”
how soon 是“还要多久才…”的意思,一般用将来时态,回答用“in …”引导的时间状语。
eg . How sooon will he be back ? “他多久回来“
------- He will be back in an hours . “他一小时后回来”
how much 也意为“多少”,但后面跟不可数名词,也对数量提问;同时还可用来询问价格“多少
钱”的意思。
eg . How much water do you want ? “你想要多少水?”
-------Two bottles . “两瓶”。
结构: How much + 不可数名词 + 一般疑问句?意思为“多少”
How much is a piece of bread ? “一片面包多少钱?
------Three yuan . “三元”
结构: How much + 一般疑问句 ?意思为“多少钱”
注意:bread 面包是不可数名词,前面不能用a,
只能用 a + 数量词+of + 不可数名词来表示
How many books do you have ? “你有多少本书?
--------- Three books. “ 3本书。”
结构: How many + 名词复数 + 一般疑问句?意思为“多少”
知识点2 . do的用法
1) 问句中的do 是助动词,帮助构成一般疑问句,没有汉语意思,我们学过的助动词有(do ,does ,did,
don’t , doesn’t ,didn’t ).
2) 助动词的用法:
助动词后面必须有行为动词,而且这个行为动词必须用原形,如标题do后面的行为动词是
exercise ,而且exercise 是动词原形。
助动词很显然在句子中只是起到帮助作用,帮助句子构成一般疑问句或构成否定句。在句子
中如果有be动词(am,is are)或情态动词(can能,会,可以。may 可以, should 应该,must 必须,
will 将要)把句子变成否定句则直接在be 动词或情态动词后面加上not ,有some 换成any 就可以了。变
成一般疑问句,则直接将be 动词或情态动词提到句首,第一人陈和第二人称互换就可以了,但如果句子
中没有be 动词或情态动词怎么变成否定句和一般疑问句呢?那就请助动词帮忙,变成否定句在行为动词
前面加don’t或doesn’t,变成一般疑问句则直接在句首加Do或Does。
eg . She is a studend .
She is not a student
Is she a student ?
He can play football.
He can not play football.
Can he play football?
They go to the movies every day .
They don’t go to the movies every day .
Do they go to the movies every day?
He goes to the movies every day .
He doesn’t go to the movies every day .
Does he go to the movies every day?
3) do ,does ,did, don’t,doesn’t, didn’t除了可以作助动词外还可以作行为动词,意思是“做”,eg . do
homework , does homework, did homework “做作业”, do sports “做运动“
eg. She does homework every day. 这里的does是行为动词“做”
She doesn’t do homework every day .
Does she do homework every day ?
知识点3 . exercisede 用法
1.
2.
v. 动词 锻炼,运动= do sports = play sports
n . “锻炼,运动” 是不可数名词,不能+s, 词组:
n . “练习,体操 ” 是可数名词,复数+s 即:exercises
词组: math exercises (数学练习题)
do morning exercises (做早操)
do eye exercises (做眼保健操)
take exercise = get exercise (锻炼)
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