Question

I seem ________ him somewhere before, but I can't remember where．

1. A.
   to have seen
2. B.
   to be seeing
3. C.
   seeing
4. D.
   having seen

Answer 1

A
解析：
選擇本題答案的關(guān)鍵是首先要明確seem后不能接動(dòng)名詞，可以是從句或介詞like或不定式。因此先排除C、D兩項(xiàng)。A、B兩項(xiàng)中B項(xiàng)是不定式的進(jìn)行時(shí)，而see一般不用作進(jìn)行時(shí)態(tài)，結(jié)合本題的題意“我似乎在哪兒見(jiàn)過(guò)他……”，故用不定式的完成式。