【导语】英语语法让很多学生都头疼，因为复杂难懂的句式和词组有时难以记忆。英语网为大家整理了英语语法大全，希望对同学们的英语语法学习有所帮助。更多内容尽在英语网。
■ 许多be (肯定式) +名词结构是习惯用法
Be a man! 要做个男子汉!
Be an angel and fetch me my slippers please. 请行行好，把我的拖鞋拿来。
Go on! Have another slice! Be a devil! 继续吃呀! 再来一片! 放开吃!
■ 否定式的Dont be+名词结构要常用得多，往往与(愚蠢的)行为有关。如：
Dont be an ass / a clown / a fool / an idiot! 别当傻瓜 / 小丑 / 笨蛋 / 白痴!
■ 请注意：be+形容词+名词结构：
Be a good girl at sch001.Dont be a silly idiot! 在学校你要做个好姑娘。别当个傻瓜!
■ be可以表示成为之义，尤其在广告中发。如：
Be a better cook! Be the envy of your friends! 你可当个好厨师! 你可成为你的朋友们羡慕的对象!
■ 否定式dont be (=dont become) 常用于劝告。如：
Dont be a racing driver! Its So dangerous. 别当赛车运动员!太危险了。
■ be还可以意谓装作，特别是用在you后面。如：
(You) be the fairy godmother and Ill be Cinderella. 你装仙姑，我装灰姑娘。
Be a monster, granddad! 爷爷，你装个妖怪!
■ 要注意类似下面这样的用法：
Now be yourself again! 现在可再显出你的本色了!
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