精英家教网 > 高中英语 > 题目详情
It is ten months since he ______ a doctor.
A.becomesB.becameC.has becomeD.had become
B

试题分析:考查时态。本题是一个固定句式。Since自从…;后面的句子使用一般过去时,前面的主句使用现在完成时或者一般现在时;本题我们的it is可以换成it has been…;句意:自从他成为一名医生到现在已经10年了。说明他是10年前做医生的。故B正确。
点评:英语中的时态主要由动词的形式决定,因此在学习英语时态时,要注意分析动词形式及具体语境,想象在那个特定的时间动作所发生的背景,这个动作是经常性动作、一般性动作、进行性动作、完成性动作还是将要发生的动作。
练习册系列答案
相关习题

科目:高中英语 来源:不详 题型:单选题

The first decade of the 21st century ______ breathtaking, non-stop development in China.
A.witnessesB.witnessedC.will witnessD.had witnessed

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

He, along with his brothers, ______ how serious the situation is.
A.haven’t realizedB.hasn’t realized
C.don’t realizeD.didn’t realize

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

Ladies and gentlemen, please fasten your seat belts.The plane __________.
A.takes off B.has taken off C.is taking off D.took off

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

Mary, stop to have a rest. You _________ the flowers in your garden for nearly two hours.
A.are wateringB.were watering
C.waterD.have been watering

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

The machine _____ . It hasn’t worked for years and no one wants to repair it.
A.didn’t workB.wasn’t working
C.doesn’t workD.isn’t working

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

Some research workers completely          all those facts as though they never existed.
A.refuseB.missC.leaveD.ignore

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

Chinese government has built new houses to ____ the homeless people in the flooded area.
A.saveB.seatC.houseD.praise

查看答案和解析>>

科目:高中英语 来源:不详 题型:单选题

-----Is this the first time you           Quanzhou?
-----No. But the first time I           here, the city wasn’t so beautiful.
A.visited; cameB.visited; have come
C.have visited; have comeD.have visited; came

查看答案和解析>>

同步练习册答案