about是表语还是状语还是定语
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about adv.【语】副词 1.大约,差不多;前后,左右 It seems to have been invented by the American astronomer David Rittenhouse in about 1785.它似乎是美国天文学家D.Rittenhouse在1785年前后发明的.2.周围,四面;到处;在...附近 3.盛行,到处散布,传布 4.绕着,围着,倒转,掉转 5.将要 prep.【语】介词,前置词 1.在...周围,在...附近,在...身边,手头 He looked at the table and the chairs about it.他看看桌子和四边的椅子.2.前后,左右;大概 3.对于,关于 Generals were afraid of him because he knew more about the deportment of a soldier than they did.将军们见到他也害怕,因为对于一个军人应具有的行为,他懂得比他们还多.4.从事于 5.为;就...的问题 The couple begin to argue about money.夫妇俩开始为钱争吵.adj.【语】形容词 1.即将...的