1. now that意思是“既然/由于”,其用法类似于since,.引导原因状语从句,其中的that可以省略.
如：Now that the rain has stopped, you can leave.
雨既然停了,你们可以走了.
2. as long as的意思一般有三个：
1）“久达...”,表时间的延续程度,类似于for.
如：I've lived here as ong as three years.
我在这儿居住已经长达三年之久.
2）“长达...”,表长度.
如：This street is as long as three miles.
这条街长达3英里.
3）“只要...”,引导条件状语从句,等于so long as或while.
如：As long as you work hard, you will succeed one day.
只要你努力学习/工作,总有一天你会成功的.
