1.I want some clothes for my daughter. 我想给女儿买些衣服。
want some clothes想买一些衣服，for介词，意为―为了……‖。
如：We buy a new chair for our office. 我们给办公室买了一把新椅子。
We have some eggs and milk for breakfast. 我们早餐吃了一些鸡蛋，喝了些牛奶。
2.Thanks a lot. 非常感谢。
(1)同义句：Thank you very much.
回答：That's all right. =That's OK. =You're welcome. =Not at all.
(2)a lot意思为―很，非常‖，同义词very much。
如：I like him a lot. 我非常喜欢他。
I feel a lot better now. 我身体现在好多了。
链接：a lot of/ lots of―很多‖的意思，修饰名词。一般用于肯定句，在否定句和疑问句中则用many/much。
如：I have a lot of/ lots of/ many books. 我有很多书。
Do many people like football in China? 在中国有许多人喜欢足球吗?
3.What can I do for you, madam? 女士，要买点什么吗?
这句话字面意思是―我能为你做什么吗?‖，在英语国家里，售货员通常向顾客说
― May/Can I help you? ‖或―What can I do for you? ‖
而不说―What do you want? ‖否则会显得没有礼貌。顾客如需购物可以回答
―Yes, please. ‖然后说出自己所需物品。如果仅想逛商店，可回答―I'm just looking, thanks. ‖或―No, thanks. Just have a look. ‖
如：—Can I help you? /What can I do for you? 要买点什么吗?
—I'd like to buy a new pair of shoes. 我想买双新鞋。
—May I help you? 你要点什么?
—I'm just looking, thanks. 谢谢，我只随便看看。
4.Not at all. 不用谢，没关系。
链接：not… at all. 一点也不，常用于加强否定的含义。
I don't want to go to school at all. 我根本不想上学。
He doesn't like bread at all. 他一点也不喜欢面包。
5.Can I try it on? 我能试穿一下吗?
try on意为―试穿‖，这是动词和副词构成的词组，宾语是名词可以放在try与on之间，也可以放在on的后面，如果是代词必须放在try与on的中间。
如：Please try on this new sweater.=Please try this new sweater on. 请试穿一下这件新毛衣。
These are new shoes. Try them on, please. 这些是新鞋，请试试。