add,v,加，加上，（add A to B ）,v,增加（+to）

误，The bad weather added our dificulties.
正,The bad weather added to our dificulties

addition,n,加法，增加

in addition to，另加，除．．．之外（还）

In addition to recorders ,they buy a TV set

add,加，addition加法， subtract,减，subtraction，减法

additional,adj,附加的，额外的．
advance,vi,前进，进展，

advanced,前进的，先进的．

advancement,推进，促进，增进．

in advance,提前，预先，Thank you in advance先行致谢．

advance（前，先）－－－－advant（有利），

advantage,有利条件，优点，好处，利益．

advantagrous,adj,有利的，

disadvantage,不利的，损失，损害．
1,adventure,n,冒险活动

２，venture,v,n,冒险，拼，闯，nothing venture,nothing gain,不入虎穴，焉得虎子．

Ｖ，敢于，大胆表示，I venture to say=I dare to say

辩异，
（１），The children set out in search of :venture（误）
                                           adventure（正）

（２），商业冒险

a business :adventure（误）
             venture（正）

adventure,想使人心振奋、寻求刺激性的冒险。
           For example：He is a man full of adventure.
                        他是一个充满冒险精神的人。

venture:n，生命危险或经济风险
           For example：
           They were the astronauts on the first venture to the moon.
                      他们是首次登月球探险的宇航员。
       
       venture作动词时的用法，
        vt.
         1. 使冒险；冒...之险；拿...冒险
            They ventured their lives in exploring the desert.
            他们冒了生命危险去沙漠探险。
         2. 以...作赌注[（+on）]
            He ventured large sums of money on speculative stocks.
            他将大笔的钱拿去做股票投机。
         3. 大胆提出（或说出）；敢于[+to-v][+that]
            I venture that you are wrong.
            我冒昧说一句,你错了。
            No one ventured to speak to him.
            无人敢跟他讲话。
         vi.
         1. 冒险；大胆行事[（+on）]
            He is too timid to venture upon a new undertaking.
            他太胆小,不敢从事新的事业。
            The children ventured out on the thin ice and fell through.
            孩子们冒险踏上薄冰,结果掉了进去。