when是什么意思,when

when do you have p.回答是什么
adverb clauses of time: (时间状语从句) when, while, as, before
你的生日是什么时候? _____ when ____ is your birthday? 2.
连词when, while, as的用法区别 难 点 诠 释 (1)作并列连词,意思
九年级英语全册 unit 6 when was it invented section b(2a-3b)课件