语言究竟是什么? 1.1 What is language? 1.2 Why do people use language? 1.3 Where did language come from? 语言有哪些主要特征? 2.1 Is language really arbitrary? 2.2 Do animals use language? 2.3 Features of the human language 声音也是有意义的 3.1 Are there principles or rules for the pronunciation of English words? 3.2 How do sounds make meanings? 3.3 Why are sounds not always so clear? 形形色色的英语词汇 4.1 Why do words usually have more than one meaning? 4.2 Why is it so difficult to spell the words? 4.3 Where do new words come from? 为我所用的句子结构 5.1 Why is there word order? 5.2 Why are there so many complex sentences in English? 英语为什有这么多时态和语态 6.1 Why are there so many tenses in English? 6.2 The tenses often mean more than what we say 6.3 What tense should we use when we speak or write? 6.4 How do we divide time into past, present, and future? 6.5 Misunderstandings in the traditional explanations of passive voice 6.6 Differences between active voice and passive voice 我们总是有话直说吗? 7.1 How do we use language to express meaning? 7.2 Do we always mean what we say? 7.3 Why are we sometimes misled by words? 我们赖以生存的隐喻 8.1 What is metaphor? 8.2 Metaphors are everywhere 谁的英语是标准英语? 9.1 Is my English standard? 9.2 Is China English acceptable? 作为思维工具的语言 10.1 What is the relation between language and thought? 10.2 How do we perceive the world?