if,although,unless,as long as的区别

Question

如题所述

Answer 1

if 是如果引导条件状语，主将从现， although 是尽管，表示转折，引导让步状语从句. unless 是“除非”得意思，=if not. as long as 是“只要”或“和……一样长”的意思

Answer 2

if 是如果，主将从现，如：If it rains tomorrow , we will not go out . although 是尽管，表示转折，不和but 连用 如Although he is ill ,he still works hard . unless 是“除非”得意思，如You cannot go out unless you finish your homework as long as 是“只要”或“和……一样长”的意思

Answer 3

if如果
although虽然
unless除非
as long as只要