你帮了他人,你说声Thank you.你应该说：you are welcome.或not at all
你想知道某个地方的名字,该怎么问：what's the name of this place?
你想告诉别人你的姐姐比Mary高的多,怎么说：my elder sister is taller than marry
你想知道昨天天气怎么样,该怎么问：What was the weather like yesterday?How was the weather yesterday?