小精灵926
Tomorrow must be a rainy day. it must rain tomorrow It must be a rainy day tomorrow
石语angeline
It dooms to rain.肯定要下雨.It dooms to rain on time.肯定要按时下雨.或It will rain absoutely.你问的应是It's to rain absoutely.或It's to rain for sure.
茵茵一夏
第一：itisrain1.这是雨2.天在下雨itisgonnarain1.浪客剑心ITISINRAIN1.在雨中（恩雅）2.在雨中（思雅）itisarain1.如果是一般陈述句，两句分别是itissuretorain1.肯定要下雨2.天一定会下雨3.一定会下雨4.一会儿会下雨的第二：whenitrains1.雨滴掉落2.落雨时分3.《当下雨的时候》4.下雨的时候everytimeitrains1.不停歇的雨2.一首歌whenitrains,itpours1.事情一发生便接踵而至2.不下则已，下则倾盆itrainsoftenhere1.这里常常下雨sometimeswhenitrains1.下雨的时候2.雨季（下雨的时候）
