Question

请帮解这题 he shook his head as if ___ no .

He shook his head as if ___"no".
A said
B to say
C was saying
D had said
答案是B shook用了过去时，不是已经好像说了吗？解释说as if 从句的省略，可我还是不明 请详细说明可以吗?

Answer 1

你把as if去掉
He shook his head to say no
这句子能理解吧，to say no 是目的状语

他摇晃着脑袋说不
加上as if
He shook his head as if to say no
他摇晃着脑袋好像说不
as if to say no 也是目的状语，把as if 看成插入语就行了

Answer 2

as if以及when,while,as等连词后面可以加上完整的句子，也可以加上不定式，分词短语，介词短语等成分（即为所谓的省略）。这是符合语法的。 此句用的是不定式

Answer 3

as if, as though
两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，"好像……似的"，例如：

They completely ignore these facts as if (as though) they never existed.
他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。）

He looks as if (as though) he had been hit by lighting.
他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。）

It looks as if the weather may pick up very soon.
看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。）

说明：as if / as though也可以引导一个分词短语、不定式短语或无动词短语，例如：

He stared at me as if seeing me for first time.
他目不转睛地看着我，就像第一次看见我似的。

He cleared his throat as if to say something.
他清了清嗓子，像要说什么似的。

The waves dashed on the rocks as if in anger.
波涛冲击着岩石，好像很愤怒。

He shook his head as if to say "no"他摇摇头，好像在说“不”。as if 表虚拟，表示与事实相反的，实际上他并没有说不。

Answer 4

as if是似乎，好像的意思，这句话翻译下来就是{他摇他的头就好像是在说“不”}。 所以，应该选B吧，表目的或是解释说明。

Answer 5

汉语意思是；他摇着头，好象要说不。as if 的省略，补充完整是；as if he is to say "no".be to do sth 是对现在的虚拟，与事实相反。