第6课
关于逗号的一些知识
原则:逗号没有能力连接两个单独的句子。
如何区分短语与句子?一个结构如果有完整的谓语部分就是句子。
何为完整的谓语部分?如果能判断出一个结构的时态就可以称这个结构为完整的谓语部分。
在什么样的情况下一个逗号可以将句子分成两部分,而这两部分都有完整的谓语呢?
1 两个句子中间有连接词连接;
2 这两个句子是主从句关系(主从句之间一定要有句子引导词来引导)。
10. Walter offered us a lift when he was leaving the office, but our work _A_, we declined the offer. [declined v. 婉言谢绝]
A not being finished B not having finished
C had not been finished D was not finished
42. A survey was carrie3d out on the death rate of new-born babies in that region, _D_ were surprising. [survey 调查]
A as results B which results C the results of it D the results of which
51. All flights _D_ because of the snowstorm, many passengers could no nothing but take the train. [having been canceled这里是独立主格作原因状语]
A had been canceled B have been canceled
C were canceled D having been canceled
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46. _A_ the calculation is right scientists can never be sure that they have included all variables and modeled them accurately. [variable n. 变项,变量;model
A Even if B As far as C If only D So long as
even if 即使,即便; so long as (后面加句子时)只要。
47. My train arrives in
A would leave B will have left C has left D had left
将来完成时:will have + 动词过去分词。
49. Harry was _A_ by a bee when he was collecting the honey.
A stung B stuck C bitten D scratched
sting v. (蜜蜂)叮,蛰; bite v. (蚊子等)咬; scratch vt. 抓伤,划破(通常指猫抓人)。
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