问题
选择题
I watched the man for a long time and wanted to know .
A．whether I have seen him before
B．where I had seen him before
C．that I had seen him before
D．when did I see him
答案
答案：A
题目分析：考查宾语从句。所有的宾语从句都使用陈述语序，排除CD。句意：我观察那个人很长时间。想知道我是否在以前看见过他。根据句意说明A正确。
点评：对于宾语从句要注意其使用陈述语序，另外要注意句意的搭配。