unit 1 how often do you exercise?
重要词组概览】
◆ how often多久一次 ◆ as for至于，关于 ◆ junk food垃圾食品。
◆ eating habit饮食习惯 ◆ of course 当然 ◆ look after 照顾， 照看。
◆ start with 以…开始 ◆ make a difference使得结果不同，有重要性。
◆ go shopping去购物 ◆ h**e a party 聚会 ◆ go to the movie去看电影。
◆ once a week每周一次 ◆ hardly ever很少 ◆ twice a week每周两次。
◆ three times a week每周三次 ◆ watch tv看电视 ◆ on weekend在周末。
◆ do homework做作业 ◆ a lot of许多 ◆ try to do试图做某事。
◆ help sb (to) do sth.帮助某人做某事 ◆ the same as和……相同。
◆ keep in good health保持身体健康。
【语法知识聚焦】
一般现在时（the ****** present tense）1.一般现在时表示现在的状态。
he is twelve.他十二岁；they are at home.他们在家。
2. 表示经常性或习惯性的动作。
i go to school at seven every day. he plays soccer on sundays.
3. 表示主语具备的性格和能力等。
she likes apples. they speak japanese. she is medium build.
肯定式。i am a cleaner. you are right.
he / she / it is here. we / you / they are outgoing
否定式。i am not ayou are not…
he / she / it is not… we / you / they are not…
否定式和疑问式。
we go to school at seven every day. (否）we don’t go to school at seven.
do you go to school at seven? （回）yes, we do.（no, we don’t.）
否定式和疑问式。
he goes to school at seven every day.
否定：he doesn’t go to school at seven.
疑问：does he go to school at seven?
yes, he does.(no, he doesn’t.)
一般现在时常和表示时间频度的副词连用。
如：often, usually, sometimes, always, never, hardly ever等。
1. i often read books in the evening
2. do they usually go to school by bike?
3. he doesn’t like milk. he never drinks it.
4. sometimes my mother gets back at five.
一般现在时常和以下时间表达法连用。例如：
in the morning/afternoon/evening, at noon/night,every day,on sunday(s),at seven。
do they h**e math in the morning?
she sleeps nine hours every night.
it takes me two hours to do my homework every day.
they don’t h**e classes on sundays.
动词第三人称单数的构成：
1、直接加--s
look—looks read—reads play—plays stop—stops
2. 在字母s, x,ch,sh,o后加--es
miss—misses fix—fixes watch—watches wash—washes go—goes
3. 辅音字母加y结尾的动词去y为i，再加--es
carry–carries study–studies hurry–hurries cry–cries
4.特殊的 h**e --has
【语法练习】
选择填空。( )how often __she exercise?
b: twice a week.
a. do b. does c. doing d. did
( )2. i __like to drink milk.
b. doesn’t c. don’t d. no
( )3. good food and exercise __me to study bettter.
a. help b. helps c. helping d. to help
( )4. is her lifestyle the same __yours or different?
a. as b. in c. at d. to
( )5. i like __for breakfast.
a. a book b. a ruler c. an egg d. a sofa
( )6. the __are $21.
a. glasses b. shoe c. table d. bike
( )7. tennis __my f**ourite sport.
a. are b. is c. am d. be
( )8. i h**e a tennis and my friend jim __two tennis rackets.
a. h**e b. play c. plays d. has
( )9. “let’s play computer games.”“that __interesting.”
a. looks b. sounds c. listens d. reads
( )10. my father likes football. but he __it.
he only __football matches on tv!
a. plays, watches b. play, watch
c. doesn’t play, watches d. plays, doesn’t watch
◆1. my mother wants me to drink it.
(1)want 作为及物动词，want sb to do sth想让某人做某事。不定式作宾语补足语。
例如：我想让你帮我学数学。
i want you to help me with math.
(2)want 作为及物动词，其后要跟宾语，其宾语可以是名词，代词或者动词不定式。
例如：我想要些水和牛奶。
i want some water and milk.
我妈妈想让帮她做饭。
my mother wants me to help her cook food.
good for my health.
(1)be good for 对……有好处 be bad for 对……有害处。
例如：多锻炼对你的身体有好处。
taking more exercise is good for your health.
在太阳底下看书对你的眼睛有害。
reading in the sun is bad for your eyes.
often do you eat junk food?
junk food 垃圾食品。
通常指那些好吃但没有营养的食品，例如膨化食品，快餐中的汉堡与薯条等均属于垃圾食品。
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