英语单项Q:Do I need bring an umbrella?A:I am afraid you__a:have to b:need

问题描述:

英语单项Q:Do I need bring an umbrella?A:I am afraid you__a:have to b:need

a:have to
如果是否定:I am afraid youdon't have to =I am afraid you needn't .
但肯定,不能用need. 这是语言习惯,只能用have to 不得不.