4道选择题(补31-41)完成(补31-41)选择题并附上一定解释,98.hehasfinishedcleaningtheroomisunknown.a.ifb.whetherc.whend.while不能选C的理由是:youcantusewhenbecauseifyouusewhen,thenthesentenceshouldbe"whe

Question

4道选择题(补31-41)
完成(补31-41)选择题并附上一定解释,
98.______he has finished cleaning the room is unknown.
a.if b.whether c.when d.while
不能选C的理由是:you cant use when because if you use when,then the sentence should be "when has he cleaned his room is unknown"
(请解释下when has he cleaned his room is unknown 主语从句不应该是陈述语序吗?)
106.although he tried,he ____not make it.
A.would b.should c.might d.could
(请请讲一下道理)
选D的理由是:it suggest that he did make an effort to try,while other three options are merely stating that he didn’t make it.
107.he looked as if he _____ill for a long time.
A.was b.were c.has been d.had been
(讲一下道理)
110.someone is knocking at the door,who _____ it be
a.can b,may c.must d.will
表推测不是A,

Answer 1

98 答案是B .但(主语从句应该是陈述语序)所以选C也可以.
106.although he tried,he ____not make it.
A.would 1）过去愿意做某事；2）过去将要做某事.
b.should 应该做某事,主观意愿.
c.might 或许,表示猜测.
d.could 1）能够,表示能力；2）一定/或许,表示猜测,用在否定句和疑问句中.
107.he looked as if he _____ill for a long time.
d.had been 虚拟语气,as if 引导的从句要用虚拟语气.本句是与过去事实相反.
110.someone is knocking at the door,who _____ it be
d.will 表应该；表单纯的将来.本句不表推测