【推荐】+be+to+do2018-2019学年上学期高二英语人教版（必修5） 3页

‎2018年10月1日 ‎ be to do ‎ 高考频度：★★★☆☆ 难易程度：★★☆☆☆‎ ‎1. In such a fierce competition, a person has to make every effort if he ______ .‎ ‎ A. has succeeded B. is to succeed ‎ ‎ C. would succeed D. will succeed ‎ ‎【参考答案】B ‎2. —Have you been to Mexico?‎ ‎ —No, I ______ last year, but Dad wouldn’t let me.‎ ‎ A. was to have gone B. was to go ‎ C. was gone D. went ‎【参考答案】A ‎【试题解析】考查be+to do的句型。be+to do通常表示“计划、安排”将要做的事情，还表示“有义务”要做的事。但在此，was to have done表示“过去原打算要做而没有做的事”。‎ ‎【知识讲解】‎ be to do用法：‎ ‎1. 表示事态发展的结果或预期的结果，意为“必然会”。‎ ‎2. 表示按计划、约定、职责、义务、要求等即将发生的动作，这是将来时 ‎ 的一种用法。‎ ‎3. 表示必须或应该，在意思上相当于must，should，ought to或have to。‎ ‎4. 表示注定要发生或不可避免要发生的事。‎ ‎5. 如果主语是以aim ‎，duty，hope，idea，happiness，job，plan，problem，‎ ‎ thing，wish等为中心的名词，或what引导的名词性从句，不定式作表 ‎ 语是对主语起补充说明的作用。‎ ‎☛You are to finish your homework before you watch TV. ‎ ‎ 你得先完成作业才能看电视。‎ ‎☛Every member of the party was to pay his own expense. ‎ ‎ 参加聚会的所有人费用自理。‎ ‎ ☛They are to be married. 他们打算结婚了。‎ ‎1. Our TV sets sell well, but ten years ago no one could have imagined such a big share in the market that they ‎ ‎ _______.‎ ‎ A. were having B. had had ‎ ‎ C. were to have D. had ‎2. I ________ get on the bus when I heard someone calling me from behind.‎ ‎ A.was to B. was going to C.would D. was about to ‎ 进步从总结开始! ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎ ‎