1.IyouAtelevisioneveryevening,ofcourseyoureyeswillachA.SitandwatchB.aretositandwatch这题选A,请问这题为什么不选B?B里的"areto"不是表示以后要做的事吗?·求详解2.Helenherkeyintheofficesosheha

Question

1.I you__A____ television every evening,of course your eyes will ach
A.Sit and watch
B.are to sit and watch
这题选A,请问这题为什么不选B?B里的"are to"不是表示以后要做的事吗?·求详解
2.Helen_____her key in the office so she had to wait until her husband_____home
A.left; had come
B.had left; came
D.had left; would come

Answer 1

1.这个句子的时间状语是every evening,并不表将来,所以谓语动词sit and watch
用一般现在时,而不用一般将来时.
2.答案为B.全句句意为：Helen将钥匙落在办公室了,她只好等她丈夫回来.
全句的主要动词“she had to wait（她只好等）”用了一般过去时,而（Helen将钥匙落在办公室了）这一动作发生在“had to wait” 之前,所以动词leave要用过去完成时,即had left; 而“等（到）她丈夫回来”是过去将来的动作,但根据英语语法,时间状语从句是不用将来时的,故用一般过去时,即came.
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