He behaves as if he were ill.是虚拟语气吗?

He behaves as if he were ill.是虚拟语气吗? ‘who does that shop assistant think he is?he behaves as if he owned the grocery.’who does that shop assistant think he is? He behaves------a baby.横线处用as还是like He behaves like an adult.He behaves as if he were an adult.区别在哪?哪一句可翻译为：他表现（举止）得像个大人. Who does that shop assistant think he is?He behaves as if he ______ the grocery.A.own B.owned CWho does that shop assistant think he is?He behaves as if he ______ the grocery.A.own B.owned C.will own D.has owned Who does that shop assistant think he is?He behaves as if he ______ the grocery.A.own B.owned CWho does that shop assistant think he is?He behaves as if he ______ the grocery.A.own B.owned C.will own D.has owned He told as if he knew everything.还是He told as if he had known everything. He looks as if he is ill为什么用if 、 looks as if he was dead 和he looks as if he is dead的区别. he looked as if sick这句话对吗?还是he looked as if is sick? He looks honest,but _____ he behaves badly.(选择并解释)A.possiblyB.happilyC.mainlyD.actually as if 用法有时候是 as if he were.a runner...有时候是 as if he was running...有点糊涂 She behaves as if she were a child.为何用were而不用was? closely表抽象的接近时后面可以加to吗?例如He behaves closely to his father.He behaves closely like his father这句话对不对? 求翻译.He sounds as if he knows what he's talking about. 英语强人请进he behaves like others此句中有无语法错误 He opened his mouth as if he were to speak 和He opened his mouth as if he had spoken有什么不同 as if he would ever make such a mistake翻译