高一英語上冊Unit 15- 18單元專題復習教案
i am to inform you that the meeting will be held in hangzhou.我謹通知你會議在杭州舉行。(職責)
a knife is to cut with. 刀是用來切割的。(用途)
they were never to meet again. 他們注定以后永遠不會見面。(命中注定)
4. tie the corners of the handkerchief to the points of the cross, and you will have a nice strong kite.
這種句式叫“祈使句 + and /or + 陳述句”結構，有時候，祈使句中的動詞可省略。
work harder, and you'll find it not difficult to learn. 再用功一點，你就會發現它不難學。
hurry up, or you will be late. 快一點，否則你會遲到。
more effort, and you can finish it in time.再加把勁，你會按時完成它。
練習：i ____ the accident with my own eyes last night.
a. did see b. do see c. have seen d. did saw
5. i’m sorry, but i don’t think i know you. i’m sorry, but… 還有excuse me, but… 如：
i’m sorry, but i would rather stay at home. excuse me, but would you please tell me the time?
6. having realised that i could use a kite to attract lightning, i decided to do an experiment.
having realised是現在分詞的完成式，在句中作狀語，表示該動作發生在謂語動詞的動作之前，相當于when i had realised that… 一般式v.-ing 表示該動作與句子謂語的動作同時發生或在其后發生。其否定形式是在v-ing前加not。
having finished his homework, the boy decided to play football for a while.
not having cleaned the classroom, they couldn't go home.
練習：_______________________ in class, the girl felt very happy. 那個姑娘在班上得到表揚，…
__________________________, we couldn’t get in touch with her. 不知道她的電話號碼，…
______________________(work)among the peasants for many years, he knew them very well.
_________________________________, he decided to write another letter. 沒有收到答復，…
(北京) ____ in the queue for half an hour, tom suddenly realized that he had left his wallet at home. a. to wait b. have waited c. having waited d. to have waited
7. pick out, pick up與pick off的區別
① pick out 挑出，辨認出 ②pick off 摘下來 ③pick one’s pocket 扒某人的口袋
④ pick up 拾起；偶然獲得/學會； (用車)接；恢復(健康)；中途搭載；加快速度
my sister is going with me to help me pick ___________ a new suit.
henry's been ill, but he's picking ___________ again now.