Section A (2a-3c)任务 : 补全对话。A:Hello.1. B:This is Mike speaking.A:Hi,Mike.This is Jack.Are you going to the school party tomorrow?B:Yes,I am.2. A:So am I.I will bring my cousin Dave.He arrived yesterday.B:3. A:What will happen if I do?B:If you bring Dave,the teacher will ask him to leave.4. A:What a pity!B:5. If you don’t have your ID card,you can’t go to the party. A:Thank you for reminding( 提醒 )me.See you tomorrow.B:See you.B E A D C A.You can’t do that.B.May I speak to Mike?C.Don’t forget to take your ID card.D.Because he isn’t a student from our school.E.What about you?If we have it today,half the class won’t come. 如果我们今天开( 聚会 ) 的话 , 一半的学生不会来。剖析 (1)“half+the+n.” 中的 half 为形容词 , 意为“一半的 , 半个的”。如 :Half the guests are women. 一半的客人是女士。(2)“half of+ 代词 /the+n.” 中的 half 为名词 , 意为“一半 , 半个”。该短语在句中做主语时 , 谓语动词与 half of 后面的名词的数保持一致 , 即当代词或名词为单数时 , 谓语动词用第三人称单数形式 ;当代词或名词为复数时 , 谓语动词用复数形式。如 :Half of the students are playing soccer on the playground. 一半的学生正在操场上踢足球。Half of the cheese is in the refrigerator.一半的奶酪在冰箱里。拓展 half 表示“半数” ,all 表示“全部” ,none 表示“没有”。
