Neil _______ in Xiamen for five years before he finally decided to go back to Scotland.
A.has beenB.wasC.isD.will have been
B

翻譯:在內(nèi)爾最終決定回到蘇格蘭之前,他在廈門(mén)呆了五年了。
解釋:
1. 樓主關(guān)鍵是搞清各個(gè)時(shí)態(tài)所表示動(dòng)作/狀態(tài)的特點(diǎn),以及句中主從句動(dòng)作發(fā)生的時(shí)間先后。
2. 后面是一個(gè)before引導(dǎo)的時(shí)間狀語(yǔ)從句,說(shuō)明主句(前句)動(dòng)作發(fā)生在before從句的動(dòng)作之前。
而從句動(dòng)作decided表明用了一般過(guò)去時(shí),所以主句動(dòng)作應(yīng)該是過(guò)去的過(guò)去了。
3. A 為現(xiàn)在完成時(shí),表明是延續(xù)到現(xiàn)在為止,錯(cuò)誤;
C為一般現(xiàn)在時(shí),錯(cuò)誤;
D什么時(shí)態(tài)都不是哦,will be been本來(lái)就是錯(cuò)誤的短語(yǔ)。
4. 此題答案用過(guò)去完成時(shí)即had been最好,但是用一般過(guò)去時(shí)也是可以的。,所以正確答案為B。
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