As long as 则没有这样直接的替换形式。使用 unless 时,主句和从句的时态要根据具体情况而定。比如 “He won't come unless you invite him. ” 这里主句和从句都是一般将来时。而在 “I didn't know the truth unless she told me. ” 中主句是一般过去时,从句也是一般过去时。As
Thatisverysensibleadvice.Mostpeoplewillcometonoharmaslongastheytakecare.Ishan'tletyourideyourbikeontheroadunlessyouwearahelmet.Ifyoufalloff,yourheadwillhitthegroundhard.Youmustprotectitagainstinjury.assoonas的常见用法 assoonas引导时间状语从句，意为“一……就……”。引导时间状语的连词包括when,while,until...
In today's lesson, we look at the difference between 'unless' and 'as long as'. Unless and 'as long as' can be used to replace 'if' in different situations. Let's have a look at some example sentences: I will go to the party if you come too. I will go to the party as long...