请帮我检查一下下面的英文句子有哪些错误,

问题描述:

请帮我检查一下下面的英文句子有哪些错误,
My big brother Strong One day told his daughter,"If I ask you 'go to get a pack of cigarettes',you go but don't return.If I ask you 'get a pack of cigarettes back',you go and get a pack back."

句子对的,没有错,句子结构分析如下.
My big brother Strong (与 big brother 同位语) One day (时间状语) told (谓语动词) his daughter (间接宾语),(此后面是 if 引出的从句,做直接宾语)"If (从句中的条件状语从句) I (主语) ask (谓语动词) you (宾语) 'go to get a pack of cigarettes' (宾语补足语),you (从句中的主句的主语) go (谓语动词)but (并列接词,主语与从句同,省略)don't return.If (第二个条件状语从句,与第一个 if 条件状从句并列,做直接宾语) I (主语) ask you (宾语)'get a pack of cigarettes back'(宾语补足语),you (从句中的主句的主语)go (谓语动词)and (并列接词,主语与从句同,省略)get a pack back."