【小编寄语】今天英语网小编教给同学们的是英语中助动词be的用法小结,一起来学习下吧!祝同学们学习进步! 1. be +现在分词,构成进行时态。如: They are having a meeting. 他们正在开会。 We were planting trees this time yesterday. 我们昨天这个时候在植树。 2. be + 过去分词,构成被动语态。如: The door was broken by Tom. 门是汤姆打破的。 English is taught in our school. 我校教英语。 3. be + 动词不定式,可表示: A. 打算、决定、计划、安排等。如: He is to visit Japan next week. 他决定下周访问日本。 I was to have told you yesterday, but you were not in. 我本打算昨天告诉你的,但你不在家。 B. 指示、命令、禁止等,即“必须,一定。如: You are to hand in the exercises tomorrow. 你们明天必须交练习。 You’re not to (=You mustn’t) smoke here. 你不可以在此处抽烟。 C. 责任、义务、需要,即“该不该。如: You are to (=should) report to the police. 你应该报警的。 |