高中英语单项选择，每题求讲解

1 David thought his cellphone was broken() his sister pointed out that he had forgotten to turn it on. A until B unless C after D because 我选C为什么错？

A 意思不一样，你理解一下。
选A 大卫一直以为他的手机坏了直到他的姐姐指出他忘了开机。
选C 在她姐姐指出他没有开机后他一直以为自己的手机坏了，这不合理吧？
2 They had spent too much time ()advantages and disadvantages ,so they decided nothing in the end.
A matching B balancing c observing D examining

B A是搭配的意思，C是观察的意思，D是检查的意思。
这道题考查句意理解。选B 含义为，他们花费了太多腔灶的时间权衡利弊，所以到最后他们什么决定都没有下。

3 These birds would strve if food was difficult() ,especially during the cold winter months
A to be found B to find c finding D being found

B be +adj.+ to do固定词组啦，高中常考，你多积累一大圆型下，主要凭语感。

4 .......,and only then()what friendship really meat to me
A I understood
B had I understood
C Ihad understood
D did I understood

你应该把前半句打上的，这样看B和D都是说得通的。
不过根据做题的感觉，我觉得选D
Only 放句首，后面跟上状语，那么那用部分倒装。也就是将谓语动词中的助动词提到主语前面。
正常语序：I understood what friendship really mean to me then.因此部分倒装，将did 提前。

5 () by angry peasant workers ,the foreign boss looked worried
A to be surrounded
B surrounded
C surrounding
D to surround 选C为什么不可以？

B 主语 the foreign boss,他是被包围滚猜，所以用被动，过去分词表示被动。
记住，非谓语动词主语与主句主语保持一致。
这句话翻译为：被生气的农民工包围，外国老板很担心。

6 Herry is believed to be ()his cousin who is studing in HongKong
A a patient boy as
B patient a boy as
C as a patient boy as

选B 但是你落了一个as
原句应为 Herry is believed to be as patient a boy a his cousin.对吧？O(∩_∩)O~
第一个as为副词，修饰形容词patient,这种as .....as 结构常考，多收集一些，培养语感很重要哦O(∩_∩)O~

希望能帮到你O(∩_∩)O~

第一题从含义上说 A选项until符合 “直到我姐姐指出我是忘了打开并桥开关，袭尺我一直以为是我的电话坏掉了” after 的话说不通。另外选after 则后面句子要用ing形式。

第二题 固定用法 balance advantages and disadvantage 平衡利弊

第三题 be difficult to do sth ,food是拍蔽高被找的 所以用被动语态
第四题 only提前引起倒装AC排除 正常语序是 then I realized...所以用did 而不是 had
第五题 考察伴随状语 boss是被surround所以只能是A C选项不存在
第六题 选A C选项正确语序应该是to be a boy asa patient as.. B完全不对

1.A 直到妹妹告诉他忘了开机
2.有点拿不准 我伍脊觉得是B 平衡比较优缺点吧
3.B be difficult to do 另吵橘败外 主动表被动升颤
4.B 倒装
5.B 被动 被农民工包围着
6.C as as 和什么什么一样 这里是和什么什么一样有耐心