Question

The man we followed suddenly stopped and looked as if _______ whether he was going in the right direction.

[　　]

A. seeing

B. having seen

C. to have seen

D. to see

Answer 1

答案：D
提示：

句中as if引导一个虚拟语气的表语从句，当从句主语与主句主语一致，且从句谓语中又包含有动词be时,从句主语及其谓语中的动词be通常可以省略.该句从句中省略了he were. 例如： From time to time he turned round as though(he was)searching for someone. 他不时地四下张望,好像在找人. He opened his mouth as if (he was)to speak. 他张开口，好像要说话似的.