if和unless引导的条件状语从句Rt.
问题描述：
if和unless引导的条件状语从句
Rt.
答
if you buy me a good dinner,i'll give you her phone number
unless you buy me a good dinner,i won't give you her phone number.意思都是如果你请我吃顿好的,我就告诉你她的电话号码