9.中文：掉进河里的人和马都淹死了。
(误)the man and the horse who fell into the river were drowned.
(正)the man and the horse that fell into the river were drowned.(who只可代替先行词人，that可代替先行词人和物。)
10.中文：这是你花了高价买的车吗?
(误)is this the car for that you paid a high price?
(正)is this the car for which you paid a high price?(关系代词作介词的宾语并放在介词之后时，只能用whom和which;关系代词that如作介词的宾语，只可紧靠先行词，将介词放在句尾。)
