Question

—What do you think of Sam, the newcomer?
     —Well, he talks as if he ________ everything.
    

A．had known

B．has known

C．knew

D．will know

Answer 1

C

试题分析：考查虚拟语气：as if“好像”，后面接方式状语，如果从句的内容和事实不符要用相应的过去式表示虚拟，句意是：你认为Sam这个新来的人怎样？--哦，他说话就像知道一切了。说明是和现在相反，用过去时。选C。
考点：
点评：as if后面的句子，要看情况，如果和事实相符合，就用陈述语气，如：It looks as if it is going to rain.就没用虚拟语气。