With是個介詞，基本的意思是“用”，但它也可以協助構成一個極為多采多姿的句型，在句子中起兩種作用；副詞與形容詞。
with在下列結構中起副詞作用：
1.“with 賓語 現在分詞或短語”，如：
(1) This article deals with common social ills, with particular attention being paid to vandalism.
2.“with 賓語 過去分詞或短語”，如：
(2) With different techniques used, different results can be obtained.
(3) The TV mechanic entered the factory with tools carried in both hands.
3.“with 賓語 形容詞或短語”，如：
(4) With so much water vapour present in the room, some iron-made utensils have become rusty easily.
(5) Every night, Helen sleeps with all the windows open.
4.“with 賓語＋介詞短語”，如：
(6) With the school badge on his shirt, he looks all the more serious.
(7) With the security guard near the gate no bad character could do any thing illegal.
5.“with 賓語＋副詞虛詞”，如：
(8) You cannot leave the machine there with electric power on.
(9) How can you lock the door with your guests in?
上面五種“with”結構的副詞功能，相當普遍，尤其是在科技英語中。
接著談“with”結構的形容詞功能，有下列五種：
一、“with 賓語 現在分詞或短語”，如：
(10) The body with a constant force acting on it. moves at constant pace.
(11) Can you see the huge box with a long handle attaching to it ?
二、“with 賓語 過去分詞或短語”
(12) Throw away the container with its cover sealed.
(13) Atoms with the outer layer filled with electrons do not form compounds.
三、“with 賓語 形容詞或短語”，如：
(14) Put the documents in the filing container with all the drawers open.
四、“with 賓語 介詞短語”，如：
(15) The young lady with a red ribbon on her head is my former maths teacher.
(16) Do you know the gentleman with both hands in his pockets?
五、“with 賓語 副詞虛詞，”如：
(17) Is there any water in the kettle with this cover off ?
(18) Out went the boy scouts with their uniforms on.
