----This returned Chinese scholar has become one of the top experts in this field.
----Yes,I know him very well.He____in Africa with animals for eight years.
A．has workeB．had workedC．workedD．has been working
C
since，for作為連詞，引導(dǎo)時間狀語（從句）如果謂語動詞是延續(xù)性的一般過去時，其表達(dá)的含義是"從這個動作結(jié)束以來"，恰好和動詞的詞義相反，具有否定的含義；如果謂語動詞是非延續(xù)性的一般過去時，其表達(dá)的含義是"從這個動作開始以來"，恰好和動詞的詞義一致，具有肯定的含義
It is 3 years since her husband worked as a news journalist. 她丈夫不當(dāng)記者已三年了。
It is 5 years since I joined the army. 我在部隊已服役五年了。（仍在軍隊服役）
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：單選題

This is the first time that I _____ the summer palace．
A．had visitedB．have visitedC．visitD．visited

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

I hadn’t expected James to apologize but I had hoped _____ me.
A．him callingB．that he would call
C．him to callD．that he call

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

I don't really work here; I ____ until the new secretary arrives.
A．just help outB．have just helped out
C．a(chǎn)m just helping outD．will just help out

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

I___ to have another try if I get another chance.
A．have been meaningB．meanC．a(chǎn)m meaninD．have meant

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

The book was received so eagerly that it _____ on the first day.
A．sold upB．was sold upC．was sold outD．sold out

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Experience is believing. If you’d like to know what it ____ like to be a soldier in World War II，____ the game “Brothers in Arms: Roads to Hill 30”.
A．would be; tryB．was; try
C．would be; tryingD．was; trying

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

I am tired. I ______ all day.
A．a(chǎn)m workingB．have been workingC．workedD．have been worked

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Lang Ping, who is said to have started her coaching career in America, ____ volleyball in China for almost twenty years.
A．playedB．have playedC．was playingD．had played

查看答案和解析>>

同步練習(xí)冊答案