2．--Do you think Mary will pass the exam this time？
-I think so．She_____for it for months．（　�。�
A．is preparingB．was preparing
C．has been preparingD．had been preparing

分析 --你認(rèn)為瑪麗這次會(huì)通過考試嗎？
---我認(rèn)為會(huì)的．她為這次考試準(zhǔn)備了數(shù)月了．

解答 答案：C．根據(jù)Do you think Mary will pass the exam this time可知考試還沒有進(jìn)行，所以她現(xiàn)在還在為考試做準(zhǔn)備，而for months表示準(zhǔn)備工作從過去開始一直到現(xiàn)在，所以用現(xiàn)在完成進(jìn)行時(shí)，答案是C．D是過去完成進(jìn)行時(shí)．

點(diǎn)評(píng) 考查現(xiàn)在完成進(jìn)行時(shí)．prepare和prepare for 的用法
1）prepare：準(zhǔn)備，后接直接準(zhǔn)備的對(duì)象，謂語(yǔ)動(dòng)作直接體現(xiàn)在賓語(yǔ)上．
eg．Mother is preparing lunch．（母親正在準(zhǔn)備午飯．）
2）prepare for：為…作準(zhǔn)備，for 后的賓語(yǔ)為準(zhǔn)備的目的．
eg．The students are preparing for the exam．（學(xué)生們正在為考試作準(zhǔn)備．）

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