1.a与an的用法a和an在英语中被称为不定冠词,表示微弱的“一”的概念,但并不强调数目,只表示名词的不特定者。a用在以辅音音素开头的单词或字母前,an用在以元音音素开头的单词或字母前。(元音音素、辅音因素指的是读音,而不是元音字母或辅音字母。)2.the的用法the是定冠词,意为“这(个),那(个),这些,那些”。用在可数名词单复数和不可数名词之前,表示特指某人某物,以区别同类中的其他人或物。①特指某人或某物或双方都知道的人或事。②特指上文已提过的人或事。③特指世上独一无二的事物。④构成专有名词。⑤用于短语中和西洋乐器前。◆写作案例今天是开学的第一天,Lucy在校门口遇见了好朋友Jane,她们互相问好并谈论她新买的钢笔,请你就此情景用英语编写一段对话,要求不少于6句话。________________________________________________________________________________________________________________________________________________________________________________◆思路点拨1.常用的问候句型:①Hello!/Hi!②Goodmorning/afternoon/evening!③Howareyou?Fine,thanks.2.所学的谈论物品的句型:①What'sthis/thatinEnglish?It'sa/an...②Whatcolorisit?It's...③Spellit,please.◆美文欣赏Lucy:Goodmorning,Jane!Jane:Goodmorning,Lucy!Howareyou?Lucy:I'mfine,thanks.Andyou?Jane:I'mfine,too.Lucy:What'sthisinEnglish?Jane:It'sapen.Lucy:Spellit,please.Jane:PEN.Lucy:Whatcolorisit?Jane:It'sred.