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X3 Unit2 复习导学案（一）
【学习目标】
1. Discover the elements of the habit cycle and understand how the habit cycle works.
2. Build up the confidence and ability to develop good health habits.
【必备单词】
1． vi.依赖；依靠；信赖 →reliable adj.可信赖的；可依靠的→reliably adv.可靠地；确实地
2． vt.& vi.组成；作曲；撰写→composition n．组成；作曲；作品→composer n．作曲家；
作家
3． n．专科医生；专家→special adj.特别的；重要的；特设的→specialize vt.专攻；专门研
究
4． n．顾问；高级顾问医师→consult vt.& vi.请教；咨询 vt.查阅；参考
5． adj.含糖的；甜的→ sugar n．糖；食糖
6． vt.使恢复精力；使凉爽；刷新→refreshment n．点心；茶点；凉爽→refreshed adj.精神恢
复的→refreshing adj.提神的；令人耳目一新的
7． vt.吸引全部注意力；吸收→absorption n．吸引；合并→absorbing adj.吸引人的→absorbed
adj.全神贯注的
【必备短语】
1． 回答；答复
2． 依赖；依靠；信赖
3． 立即；马上
4． 决定；选定
5． 下定决心
6． 由……组成(或构成)的
7． 剃掉；刮去
8． 焦虑不安；心力交瘁
9． 筋疲力尽的；疲惫的
10． 控制；掌握
11． 试验；测试
【小试牛刀】
1. Both sides guarantee to take effective measures to (促进) further cultural exchanges.
2. The system, though well-meaning, is open to (滥用).
3. Don't think too much about the (消极的) things. Cheer up!
4. I should be confident and (提高) my ability to achieve my goal.
5. Winning the match was just (回报) for the effort the team had made.
6. As is known to all, emotional or mental problems can arise from a physical(身体的) cause.7. Only in this way can we (激发) our potential and create miracles in life.
8. I have good communication skills and knowledge on (心理学).
9. Unluckily, he accidentally (删除) important files from the computer system.
10. (1)As a (compose) he has proved that he is very familiar with the creation of large-scale dramas.
(2)The group (compose) of three influential physicists and ten assistants has made a
breakthrough in physics.
11. I must the experienced about how much exercise I should attempt. (consult)
12. At that time, Lin Qiaozhi was one of the most famous medical (special) in China.
13. The (rely) and hard-working person is needed for this position.
14. (1)Consider taking a few short breaks throughout the day or taking a short nap to feel more energetic and
(refresh).
(2)It was a very hot day and the water was very (refresh).
X3 Unit2 复习导学案（二）
【语法指导】
动词不定式作主语通常表示个别的、具体的、一次性的或者具有将来含义的动作，并且句子谓语动词
用第三人称单数形式。常见的动词不定式作主语的情况主要有三类：
一、动词不定式直接作主语
动词不定式具有名词的特征，可在句子中充当主语。
◆To know something about English is one thing; to know English is quite another.
懂一些英语是一回事；掌握英语完全是另一回事。
◆To love and to be loved is the greatest happiness one can get. 爱与被爱是一个人能获得的最大幸福。
动词不定式和动词-ing形式作主语的区别
(1)动词不定式：表示具体的某次动作，特别是将来的动作。
◆To teach you the uses of the infinitive is my job today. (表示具体行为)
教你们不定式的用法是我今天的工作。
(2)动词-ing形式： 表示比较抽象的、经常性的、一般性动作。
◆Teaching is my job. (表示抽象行为) 教学是我的工作。
[即时演练1]——单句语法填空
(1) (finish) reading the book will take you two hours.
(2) (pay) a visit to the Forbidden City is my dream.(3)To improve people's lives and to speed up socialist construction (be) two important tasks today.
(4) (stay) up too late is a bad habit for our health.
二、it作形式主语句型
1．It is＋形容词(＋for/of sb.)＋to do sth.
◆It is necessary for us to master a foreign language. 我们有必要掌握一门外语。
◆It is very kind of you to help us. 你帮助我们真是太好了。
区别for 与of
(1)“for sb.”的句型常用来表示事物的特征，用于表示客观情况的形容词，如 easy、hard、difficult、
interesting、impossible等。
◆It's very hard for him to study two languages. 对他来说学两门语言是很难的。
(2)“of sb.”的句型一般用来表示人物的性格、品质，用于表示主观感情或态度的形容词，如good、kind、
nice、clever、foolish、 right等。
◆It was careless of him to make such a mistake.＝He was careless to make such a mistake.
犯了这样的错误，他太粗心了。
2．It is＋a/an/one's＋名词(如a pity/a shame/a pleasure/one's duty/an honor. . . )＋to do sth.
◆It's a great honor to be invited to your birthday party. 很荣幸被邀请参加你的生日聚会。
3．It takes/costs/requires/makes sb./sth. to do sth.
◆It took me two hours to finish the work. 我完成这项工作用了两个小时。
在“It is＋no use/no good/useless/fun/enjoyable/tiring/interesting/foolish/nice/a waste of time/a pleasure...”句
型中常用动词-ing形式作真正的主语。
◆It is no use waiting here doing nothing.
无所事事地在这里等待是没有用的。
[即时演练2]——单句语法填空
(1)(2021·全国甲卷) It is possible (walk) or bike the entire 14 kilometers.
(2)It is good manners for the young (give) their seats to the old.
(3)It is my ambition (make) sure that the disabled people have access to all public buildings.
(4)It is no use (argue) with him, for he is so stubborn.
三、“疑问词＋动词不定式(短语)”结构
动词不定式(短语)可与疑问词when、where、how、what、which、who等组合，在句中作主语。
◆Where to hold the meeting is still unknown.
会议地点还未知。
◆How to solve the problem has not been decided yet.
如何解决这个问题还未确定。
[即时演练3]——单句语法填空
(1)How (cure) this kind of illness is still unknown.(2)Whether (do) it or not has not been decided.
(3)How (deal) with this case hasn't been known yet.
