今天我去商店买东西。jīntiānwǒqùshāngdiànmǎidōngxi。Today I go to the store to buy some things.我想给朋友买一本书。wǒxiǎnggěipéngyoumǎiyìběnshū。I want to buy a book for a friend.我问:请问,这是多少钱?wǒwèn:qǐngwèn,zhèshìduōshaoqián?I ask: Excuse me, how much is this?他说:十块钱,谢谢。tāshuō:shíkuàiqián,xièxie。He says: Ten yuan, thank you.我说:谢谢你,再见!wǒshuō:xièxienǐ,zàijiàn!I say: Thank you, goodbye!