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被动语态：be + v-ed + by eg the countries which threatened by 主谓一致：n + eg....the countries which threatened by... 主谓一致：n. + + v 非谓语动词： doing----done 二、连词： 三大从句： 定语从句：...,that + 从句----which/who ...prep + that/who + 从句----which/whom 名词性从句：that - what 状语从句：S + even/just + S 平行结构： do, do, and doing prep + do and doing N, like N-s, N-s... 三、代词： it----they/them its----their 语义矛盾： acceptance----rejection 词性：adj-adv，adv-adj | 
