在学习一种语言的过程中,除了要掌握语音系统与语法结构外,还必须掌握相当数量的单词、片语和习惯用语。许多学习外语的人都有体会,花在词汇(单词、片语和习惯用语)上的时间要比花在学习语音系统和语法结构上的时间多得多。在学习过程中,最难的是记忆和活用单词。许多人往往是学了新的,忘了旧的,甚至因为学习没有进步而失去信心,半途而废。如 In the process of learning a language, in addition to grasping the phonetic system and grammatical structure, it is also necessary to grasp a considerable number of words, phrases, and idioms. Many people who learn a foreign language have experience, spending more time on vocabulary (words, phrases, and idioms) than on learning the phonetic system and grammatical structures. In the learning process, the hardest thing is to memorize and use words. Many people often learn new things, forget the old ones, and even lose faith because learning does not progress. Such as