on condition that 和 as long as 有什么区别

Question

on condition that 和 as long as 有什么区别

Answer 1

on condition that可译成“如果...；在...条件下,若…则；”带有条件性,比较正式.
而as/so long as是“一...就”,在一定条件下也有“只要”的意思,强调主句和从句的情况并存.
即在表示“条件”的时候两者用法基本一样.
试比较：
I will lend you the book on condition that you return it on Monday.
如果说你能在星期一还我,我可以借给你这本书.
As long as you tell truth ,I'll try to help you .只要你告诉我真相,
但是,as/so long as 还有其它意思.
1.表示时间,意思是“达……之久”.例如：
You can keep the book as long as you like .
2.表示原因,意思是“既然,由于,因为”.引导原因状语从句,例如：
So long as the weather is changeable these days ,we'd better get in wheat in time .
So long as you are going to town tomorrow ,you can do something for me .
3．另外,as long as 还可以用于比较级as…as的句型中,表示像……一样长,如：
My arms are as long as yours.