When I caught him（ ）I stopped buying things there and started dealing with another shop.
A.cheating
B.cheat
C.to cheat
D.to be cheating
首先求翻译句子.虽然我选对了,但还是一知半解,所以求讲解!deal with在这里是处理的意思吗?catch him cheating又是什么意思?
When I caught him cheating,I stopped buying things there and started dealing with another shop.当我发现他欺骗,我停止在那里购买东西,而开始和另一家商店打交道（或交易）.
caught him cheating：发现了他的欺诈（哄骗、欺骗）行为.
deal with：惠顾； 与…交易；应付； 对待.
再问： 为什么用start doing不用start to do？
再答： 问： 题中为什么用start doing不用start to do？ 答： 之所以用 started dealing with 是原为“谈及一项长期活动或开始一种习惯时，使用动名词形式；另一方面与“stopped buying things ”形成前后文的对照。 相关知识介绍： start to do 和start doing的区别： 1、谈及一项长期活动或开始一种习惯时，使用doing. How old were you when you first started playing the piano? 你几岁时开始弹钢琴？ 2、 begin, start用进行时时，后面动词用不定式to do I was beginning to get angry。 我开始生起气来。 3、在attempt, intend, begin, start 后接know, understand, realize这类动词时，常用不定式to do。 I begin to understand the truth。 我开始明白真相。 4、物作主语时 It began to melt.
