Chapter3 Weekend fun（讲义）新版香港朗文英语三年级上册

Chapter 3 单元复习讲义 知识点呈现 1. in 2.Sentences： When is the school picnic? It is on the seventh of November. When is Open Day? It is on the second of December. When is the school concert? It's on the twenty-third of April. When is Sports Day? It's on the second of May. When is Speech Day? It's on the tenth of October. 知识点讲解：数词 1.基数词是表示数目多少，例如：one,two,three...... 2.序数词是表示顺序的词，它的前面一般要用定冠词the ：the first floor 3.基数词变序数词的规则: 基变序，有规律，词尾加上-th (fourth sixth) 一、二、三，特殊记，结尾字母t, d, d(first, second, third) 八去t, 九去e ( eighth, ninth), ve 要用f替（fifth，twelfth） 遇上ty结尾基变序，y要变成ie. (twentieth, sixtieth) 若是碰上几十几，只变个位就可以。（twenty-first） 以下情况序数词前面不加the ①序数词前面有形容词性物主代词或名词所有格时： Eg:This is my second birthday in this year. Tom’s first bag is blue and white. 练一练： 1.选择题 ( )1.September is ________ month of a year. A. ninth B. the ninth C