在什么情况下用动词原形 be1：There used to be a restaurant around the corner.2：There will be an exciting football match this Sunday.3：May you be always happy!如上 1 是因为前有介词to 2因为是将来时吗3呢
问题描述：
在什么情况下用动词原形 be
1：There used to be a restaurant around the corner.
2：There will be an exciting football match this Sunday.
3：May you be always happy!
如上 1 是因为前有介词to
2因为是将来时吗
3呢
答
1,2均是there be 结构，" 存在，有" 的意思
3中，may是助动词，后接动词原形，YOU ARE HAPPY，ARE 的原形就是be 阿
答
what are you going to be when you grow up?
答
Will you be at home?
Be careful!
一般用于将来时或祈使句中.