What can I say? 我该说什么呢? I'm speechless. 我说不出话来了. You shouldn't have. 你不该这么做的. I really don't deserve it. 我实在不敢当. You're too good to me. 你对我太好了. I really like this gift. 我真的很喜欢这个礼物. It's very useful. 这个东西很实用. I was going to buy one. 我本来要买一个. You read my mind. 你真是了解我.