It’s important to have a healthy lifestyle教案

agree

2 even a ten-minute nap.............in the afternoon
ten-minute

allow
3 not getting enough sleep.........................to work
not

effect

4 sleep experts say that...................at the time
That
It
Try
Too..to
[课后作业]同步训练

第六、七课时(Review)
Step 1 selfcheck
I  do exercises and translate
II [短语回顾]
1  used

2 help

3 need

4 afraid

5 angry

6 let

step 2 grammar
动词不定式在句中可充当主语、表语、宾语、宾补、定语和状语等。
一、作主语
动词不定式作主语可位于句首。例如：
To learn a skill is very important for everyone in society.
也可使用it作形式主语，而将其置于句末。例如：
It is necessary for young students to learn a foreign language.
动词不定式作主语的常用句型有：
1. It is＋adj./ n. (＋for sb.／sth.) ＋ to do sth.
用于此句型的形容词有：easy, hard, difficult, possible, important, impossible, necessary, good, bad, exciting, interesting, surprising等。
考例1：Is ____ possible to fly to the moon in a spaceship? (88 MET)
  A. now    B. man   C. that    D. it
用于此句型的名词有：pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。
2. It is＋adj.＋of sb.＋to do sth. 
    该句型中只能使用描述某人的品德、特征的形容词，如： kind, nice, wise, silly, polite, impolite, friendly, foolish, clever等。
3. It takes sb.＋some time＋to do sth.
该句型意为“做某事花费某人多长时间”。
二、作表语
    动词不定式作表语常用于以下结构：My wish/ job/ aim/ goal is…及The next step/ measure is …等。
三、作宾语
常见的只能使用动词不定式作宾语的动词有：agree, choose, decide, hope, fail, wish, refuse, expect, manage, plan, intend, pretend, promise, offer, afford, demand, arrange等。
believe, think, consider, feel, make等动词可用于“动词+ it +adj. / n+to do sth.”句型，其中使用it作形式宾语，而将真正的宾语动词不定式置于句末。
四、作宾补
 可后接动词不定式作宾补的动词有：advise, allow, ask, hear, order, see, tell, want, wish, watch等。believe, consider, count, declare, deny, feel, find, guess, imagine, judge, know, prove, realize, suppose, think等动词后可接to be型不定式作宾补。 hope, demand, suggest等动词不能后接动词不定式作宾补。例如：
【误】I hope my son to be back soon.
【正】I hope my son will be back soon.
【误】She suggests us to have a discussion about it.
【正】She advises us to have a discussion about it.
【正】She suggests that we (should) have a discussion about it.
在主动结构中，下列动词后作宾补的动词不定式应省略to：“五看”(see, watch, notice, observe, look at)“三使”(make, let, have)“两听”(hear, listen to)“一感觉”(feel)。
但是，改为被动结构后，应补出省略的to。
五、作定语
动词不定式作定语，应位于所修饰词语之后，即：作后置定语。例如：
Have you got anything to eat? (to eat修饰anything，位于其后)
下列名词后常接动词不定式作定语：ability, attempt, chance, courage, decision, effort, failure, promise, way, wish等。由only, first, last, next以及序数词或形容词最高级修饰的名词后，也常接不定式作定语。
六、作状语 动词不定式作状语，可表示目的、原因、结果或条件。
作目的状语，还可以使用in order to或so as to。结果状语还可以使用enough to, too…to…, so…as to, such… as to等结构。

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