這個題很有意思,很不錯,很容易選錯C.
這個題的正確答案是A
這個題的關鍵是句未的動詞studied,是過去式,說明Robert已經不在國外學習了,已經完成了該動作,符合完成時態(tài)的定義.這個題如果把studied改為studies,那么這個題就選C,表示正在進行.
你問的問題,什么時候要用上been,這很簡單,been+過去分詞,表示被動語態(tài)的完成式.而題目中,是主動語態(tài),不是被動語態(tài),所以不用been.
Robert is said___abroad,but I don't know what country he studied in.
Robert is said___abroad,but I don't know what country he studied in.
a.to have studied
b.to study
c.to be studying
d.to have been studying.
這個是現(xiàn)在完成時么?為什么a選項不是to have been studied?什么時候要用上"been"這個單詞的?
a.to have studied
b.to study
c.to be studying
d.to have been studying.
這個是現(xiàn)在完成時么?為什么a選項不是to have been studied?什么時候要用上"been"這個單詞的?
英語人氣：244 ℃時間：2019-09-22 07:50:29
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