核心问题
（A）He got caught.
(B) Now you get dressed and go out and try your luck.
我知道 got caught 是被动语态。在句(B)中 get dressed 是不是被动语态呢？
词典解答
get 除了用作助动词与过去分词构成被动语态之外, 还可以用作连系动词, 要求 v-ed 作它的补语(表语)。因此, 在上面的句子里 get dressed 应分析为系表结构(VC)。类似用法还有: get bored(厌烦), get tired(疲劳, 累了), get excited(激动), get lost(迷路)。
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I have to get dressed before eight o'clock. (CGEL) 我必须 8 点前穿好衣服。
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I am getting bored and homesick. (Yeats) 我开始感到厌烦、想家。
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Nowadays I seem to get tired from the least exertion. (Wood) 现在我稍微花点力气似乎就感到疲劳。
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“Don't get excited, father,” said Lester quickly. (Dreiser) 莱斯特急速地说：“爸爸，不要激动。”
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He was starting to get worried. (Dan Brown, The Da Vinci Code) 他开始担心起来。（《达·芬奇密码》）
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I don't want to get mixed up with the police again. (CGEL) 我不想再和警察纠缠不清。get dressed/be dressed 见 get used to