PREPOSITIONPREPOSITION由两个介词构成的双重介词：由两个介词构成的双重介词：till after, from behind, except in We stayed there till after the sunset.He picked up the gun from behind the counter.The weather has been fine except in the north.beneath / underneathbeneath / underneath表示“在下面（两物接触）”， underneath有时用于表示抽象含义。The earth is beneath our feet.Underneath that stern exterior was a heart of gold.beside, beyondbeside, beyondbeside表示“在旁边”， beyond表示“在的那一边”I sat beside the driver.They live in a small village beyond the Great Wall.besides, except, except for, besides, except, except for, except (that), butexcept (that), but都表示“除了”，但用法有区别Besides John, all of us passed the exam.（John也及格了）All of us passed the exam except John. （John不及格）You can all go except Tom.We had a very good time except for the weather.在句首须用except for. eg. Except for Tom, you can all go.Except (that) 表示“只是”，后面连接从句。I would willingly go except that it is too far.(to be continued)besides, except, except for, besides, except, except for, except (that), but except (that), but But用作介词时，常用于all, no, nobody, who, where等词后面；but不用于句首。There is no one here but me.Who but Tom would have done such a thing?All but / except the captain were rescued.due to / owing todue to / owing todue to用作表语，owing to用作状语，但现在也常见due to用作状语His absence was due to the storm.He arrived late owing to / due to the storm.WithWith引导的独立结构引导的独立结构 with + 名词 / 代词 + 不定式He knew that with him to help her, she could and would succeed.with + 名词 / 代词 + 动词-ing 形式With his satchel trailing behind him, the small boy ran past.with + 名词 / 代词 + 动词-ed 形式With the question settled, they were happy and relaxed.(to be continued)WithWith引导的独立结构引导的独立结构 with + 名词 / 代词 + 介词短语With chalk in one hand and a textbook in the other, the professor rested against the blackboard.with + 名词 / 代词 + 形容词Although they sat with doors and windows open, they were overpowered by heat.with + 名词 / 代词 + 副词He went out with no hat on.