问题补充:
I often saw the boysin the river.
A. swam
B. swimming
C. to swim
D. swim
答案:
A. swam
B. swimming
C. to swim
(答案→)D. swim
解析:句意:我经常看到这些男孩子在河里游泳。see sb. do sth.看到某人做某事,看到了全过程;see sb. doing sth.看到某人正在做某事,看到正在进行的动作,故选D。
时间:2021-07-03 20:24:42
I often saw the boysin the river.
A. swam
B. swimming
C. to swim
D. swim
A. swam
B. swimming
C. to swim
(答案→)D. swim
解析:句意:我经常看到这些男孩子在河里游泳。see sb. do sth.看到某人做某事,看到了全过程;see sb. doing sth.看到某人正在做某事,看到正在进行的动作,故选D。