【正文】
water rises and fills about one fifth of the jar. 因為大約空氣的五 分之一是由氧氣構成的,所以水上升并填滿了大約廣口瓶的五 分之一。 Lesson 26 Keep the Candle Burning [探究 ] (1)be made up of 意為“ ____________”。 (2)one fifth 意為“ ____________”。分數(shù)的表達方式:分子用________詞,分母用 ________詞,當分子大于 1時,分母加 s。 由 …… 組成 五分之一 基數(shù) 序數(shù) [記憶口訣 ]分子基,分母序;分子大于 1,分母加 s。 Lesson 26 Keep the Candle Burning [拓展 ]分數(shù)短語作主語時,謂語動詞的單復數(shù)取決于分數(shù)后的名詞的單復數(shù)。 Two thirds of the students are boys in our class. 我們班三分之二的學生是男生。 2. 2022?安順 — Mum, of the apples________ gone bad. — We39。d better eat up the rest as soon as possible. A. one third have B. one thirds have C. one third has D. first three has A Lesson 26 Keep the Candle Burning