Question

__________ did your uncle leave his hometown ?
He _________ for nearly 20years .

A．When , has left	B．When , has been away
C．How long , has left	D．How long , has been away

Answer 1

B

試題分析：句意：你的叔叔什么時間離開他的家鄉(xiāng)的？他離開有近20年了。How long ,多久提問一段時間，與它連用的要么是可延續(xù)性的動作，要么是延續(xù)性的狀態(tài)。根據(jù)leave非延續(xù)性動作，可知用when提問。for nearly 20years近20年，一段時間，leave對應的延續(xù)性狀態(tài)是be away.故選B。