作业帮求助几道单选题+讲解1.____modeling business is by no means easy to get into,the good model will always be in demand.A.While B.Since C.As D.If2.It was evening____ we reached the little town of Winchester.A.that b.until C.since D.before3.—You
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求助几道单选题+讲解1.____modeling business is by no means easy to get into,the good model will always be in demand.A.While B.Since C.As D.If2.It was evening____ we reached the little town of Winchester.A.that b.until C.since D.before3.—You
求助几道单选题+讲解
1.____modeling business is by no means easy to get into,the good model will always be in demand.
A.While B.Since C.As D.If
2.It was evening____ we reached the little town of Winchester.
A.that b.until C.since D.before
3.—You haven't lost the ticket,have you?
—___.I know it's not easy to get another one at the moment.
A.I hope not.B.Yes,I have C.I hope so D.Yes,I'm afaid so
4.Sientists think that the continents____always where they ____today.
A.aren't;are B.aren't;were c.weren't;are D.weren';were
答案是ADAC
求助几道单选题+讲解1.____modeling business is by no means easy to get into,the good model will always be in demand.A.While B.Since C.As D.If2.It was evening____ we reached the little town of Winchester.A.that b.until C.since D.before3.—You
1.A 根据句意,前后两句是让步关系,选择尽管含义,所以是A
2.D 由句意得知,意思“才”,选before,如果用until 就要有not,且放在evening之前,此句不是强调句,因此不用that
3.A 反义疑问句,你没有丢票是吗?回答是我丢了,（由后句可知）,如果用肯定形式回答,就是没有丢
4.C 这是一种对将来时态的虚拟,所以用过去时,后面是today,用现在时,这是混合虚拟的用法
while在这是指当的意思
before是在什么之前
你还没有遗失票，是吗 ? 我希望不我知道此刻拿另外一张票不容易
选weren't是指过去，而最后一个词是today,所以用现在时