###问一个英语题#####在那里的时候,他们花一半的时间从事体力工作()Whiletheretheyspenthalfthetimedoingphysicalwork.Whilestayedthere,theyspenthalfthetimeonmanualwork.Whilestayingthere,theyspenthalfthetime

Question

###问一个英语题#####
在那里的时候,他们花一半的时间从事体力工作( )
While there they spent half the time doing physical work.
While stayed there,they spent half the time on manual work.
While staying there,they spent half the time to do physical work.
While they stayed there,they spent half their time to manual work.
请选择,然后说明为什么选那个,还有,帮我分析出题者考察的是什么?

Answer 1

选A
B中应用staying,表示主动
C中应用 spent half the time doing physical work.
D 应为they spent half their time on manual work.
考点：1、独立主格,句子的逻辑主语要与句子的真正主语一致,B中主语是they所以要用staying 表示主动
2、spend +时间＋doing sth/on sth