题目内容
Mr. Bo _____ for half a month. He’ll come back in two months.
| A．left | B．leave | C．has left | D．has been away |
D
试题分析：句意：Bo先生已经离开了半个月了，两个月之后他将回来。句中有表一段时间的状语for half a month，谓语动词要有延续性，leave 改为be away,故选D.
点评：延续性动词与表示一段时间的时间状语连用。非延续性动词向延续性动词的转变熟记一下几个：
leave --- be away, borrow --- keep, buy --- have, begin/start --- be on, die --- be dead, leave --- be away from, fall asleep --- be asleep
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