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Unit2 单元重难点及作文
1、exercise的用法
v.不及物，意思是锻炼训练 如：I exercise every day
n. 锻炼a. 习题，练习，可数名词 如：she does her exercise every evening.
b. 运动、锻炼，不可数名词 如：her grandfather takes/ gets exercise every morning.
2、how often的用法
多久一次常用来询问事情发生的频率。
回答常用always, usually, often, sometimes, hardly ever, never, once a day, twice a week, every four years等表频率的词或短语。
如：how often do you watch TV? I watch TV twice a week.
注意区别以下短语：
How long多长时间答语为for+一段时间。
How soon将过多久，多久以后，常用将来时，答语为in+一段时间
How many times,多少次，表示数，答次数。
How far多远，问距离，答距离。
3、hardly, hard
Hardly是adv.意为几乎不，几乎没有，almost和否定的词的组合可与hardly互换。例如：there’s hardly any meat left.=there’s almost no meat left.
在构成反意疑问句时，要前否后肯，如：She hardly says a word, does she?
hard既是adj.又是adv.adj.意思为困难的，硬的，如it’s hard to work out this problem.计算出这个题是很困难的。Adv.为努力地猛烈地如：we work hard.我们都努力地工作。
4、drink喝v.;饮料n.;与eat有区别。eat吃v.
5、want用法v.及物动词
后跟名词或代词作宾语。如：She wants a red pen.
后跟不定式作宾语；want to do sth.想要做某事。如I am tired, I want to have a rest.
后跟动词不定式作宾语补足语。即：want sb. to do sth. 即想要某人做某事。
如：her mother wants her to drink some milk every day.
拓展：wants sth.=would like sth, Want to do sth.=would like to do sth.
类似的还有：help sb.(to) do sth.
6、It’s adj. to do sth. it’s adj. for sb. to do sth.
意思是(对某人来说)做某事是怎样的？
如：It’s good for my health.(它对我的健康有好处)
拓展：doing sth. is adj.=it’s adj. to do sth.
7、“但是”的用法
Although, though, but都是虽然但是意思，但although, though必须用在虽然意思处，而but必须用在但是意思处，且两者不能同时使用。
如：maybe I’m not very healthy, although I have one healthy habit.
=I have one healthy habit, but maybe I’m not very healthy.
8、Kind of 有点儿。修饰adv.或adj.;与之相一致的还有a little, a bit等
如：I think I’m kind of unhealthy.我认为我有点儿不健康。
9、Keep用法
作连系动词，保持；使保持某种状态，其后可接形容词。如：请安静keep quiet, please.
保持身体健康Keep in good health=keep(be) healthy=be in good health
让某人一直种某事Keep sb. doing sth.
10、Must与have to
相同：均可表示必须。
不同点:must指主观上必须，have to 指客观上不得不。Must无时态变化，have to有时态及人称的变化。
如：She must work hard. It’s raining, Tom has to stay at home.
短语汇总
watch TV 看电视
surf the Internet 上网冲浪
once a month 一月一次
three times a day 一天三次
try to do 试着做
of course 当然
eating habit 饮食习惯
as for 就…而言
stay/keep healthy 保持健康
help sb. (to) do sth. 帮助……做……
how often 多久一次
at least 至少；不少于；起码
hardly ever 几乎不
go to the movies 去看电影
swing dance 摇摆舞
every day 每天
on weekends 在周末
once a week —周一次
go shopping 去购物
twice a week —周两次
three times a week 一周三次
be full 忙的
go to bed 去睡觉 look after 照看
stay up 熬夜
play sports 做运动
junk food 垃圾食品
not...at all 根本不
play computer games 玩电脑游戏
such as例如；像……这样
be good for 对……有益
a lot of 大量；许多
go camping 去野营
more than 多于
…percent of ……百分之几的
less than 少于
句型
1. What does she do on weekends? 她在周末常干什么？
2. She often goes to the movies. 她经常去看电影。
3. —How often do you exercise?你多久做一次运动？一Every day.每天。
4. 一What does he do on weekends?他周末做什么？
一He usually watches TV.他通常看电视。
5. —What’s your favorite program?你最喜欢什么节目？—Animal World.《动物世界》。
6. —How many hours do you watch TV every week?你每周看多少小时的电视？
一One to four.—到四小时。
7. Ninety percent of the students always use the Internet. 90% 的学生总是使用互联网。
作文1：Vince通常6:30在家吃早饭。以前他喜欢吃快餐，现在他改变了他的饮食。早饭他常常吃些牛奶、面包和鸡蛋。中午12:00，他在学校吃午饭。他常常吃一碗饭、一些肉和一些蔬菜。有时，他吃鱼。在晚上，他常常和家人一些吃晚饭。现在他比以前更健康了。
【参考范文】
Vince usually has breakfast at 6:30 at home. He liked to eat fast food before, but now he changes his diet. He has some milk, bread and eggs for breakfast. He has lunch at 12:00 at school. He often has a bowl of rice, some meat and vegetables. Sometimes he has some fish. He usually has supper with his family. He is healthier than before.
作文2：请根据下列所给的信息提示，以“How to keep healthy”为题写一篇70个词左右的短文。
提示：1. No sports, no life.生命在于运动。
2. An apple a day keeps the doctor away.一天一个苹果，医生远离我。
3. famous proverb 名言
【参考范文】
No sports, no life. Do you hear of that? That is to say, we should take more exercise every day. We can walk, run, swim, skate, or play ball games.
An apple a day keeps doctors away. It’s also a famous proverb. That means we should have good eating habits. Try to eat a lot of fruit and vegetables, eat less meat or junk food. Have enough sleep every night. If you do these, I think you can keep healthy.
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