英语复习知识点概要open和other wise open     1)用作动词动词：打开门，经营、开办 ：open a door/window/a small shop/one’s hand/one’s eyes/one’s mouth/fire开门/开窗/开一家小商店/张开手/睁开眼/张开嘴/开火；be opened to traffic通车；open up开采（发） Now,he opens a small factory of his own.现在他自己办了个厂。 Open the door, please!请开门！ 2）用作形容词,表状态，“开着的”：keep open开着门；be open开门、开业；cut…open切开；leave the door open 开着门；in the open air 在野外；an open secret公开的秘密；keep one’s eyes open睁眼 Don’t keep the door open. 别让门开着（即：请把门关上）。 [应用]选择正确答案  3) be open to对……开放 Many school libraries are open to children on Sundays. 不少学校的图书馆周日给孩子们开放。 新概念英语网课 新概念英语听力 新概念英语音频 ①John was so sleepy that he could hardly keep his eyes________.(MET’92) A.open                      B.to be opened C.to open                   D.opening ②Some new oilfields ________since 1976. A.were opened up            B.has been opened up C.have been opened up       D.had been opened up ③The computer center, _________ last year,is very popular among the students in this school. A.open                      B.opening C.having opened             D.opened Key:①A ②C ③D or else = other wise = if not否则   Hurry up or else you’ll be late.   快点，否则人会迟到的。   Study hard or else you won’t pass the exam.   努力学习，否则你会考试不及格的。   Put on more clothes or else you’ll catch a cold.多穿些衣服，否则你会感冒的。 order food   叫食物 order n.&vt./vi.订购…… place an order for sth.订购…… order sth.from…向……订购…… order sb.sth. ?order sth.for sb.为某人订购…… I have ordered you some new clothes.