1、take a chair, take the chair
    take a chair是"拿一把椅子" 坐一會兒"的意思。例如：He has just taken a chair into the room.他剛才拿了一把椅子進(jìn)了房間。Won't you take a chair?你請坐一會兒，好嗎？
    take the chair是一個(gè)習(xí)慣用語，表示"擔(dān)任主席，主持會議"的意思當(dāng)然，在一定場合，它也可以表示"拿（這）把椅子"的意思。例如：We hope you will be so kind as to take the chair.希望你會樂意主持這次會議。Who took the chair at the conference?那次會議誰擔(dān)任主席？Please take the chair out.請把這把椅子搬出去。 　
    2、take...as, take...for
    這兩個(gè)關(guān)聯(lián)短語都是指"把...看作，把...當(dāng)作"的意思，但含義有所不同。
    take...as是一般地看待某人或某物，相當(dāng)于regard...as。例如：They take us as little kids who count for nothing.他們把我們看作是無足輕重的孩子。We mustn't take success and failure as a personal matter.我們不應(yīng)當(dāng)把成敗看作是個(gè)人的事。
    take...for有把某物或者人錯(cuò)看成或錯(cuò)當(dāng)成的含義。例如：At first they took him for a foreigner. Several months later, they came to know he is a true Chinese.開始他們都把他當(dāng)成外國人，幾個(gè)月后，他們才知道他是一個(gè)真正的中國人。Do you take me for a fool who believes that tale?你是不是把我看成個(gè)傻瓜，以為我竟會相信那種謊言？