高考英语单元知识点复习Unit 4

unit 4
理解:要点诠释
单词
1.absence
讲： n.缺席；不在；缺乏
例：behave yourself during my absence.
我不在时你要规矩点。
absence of rain caused the plants to die.
因缺水导致植物枯死。
链接•拓展
    absence of mind心不在焉，
    absent adj. be absent from缺席
    he was absent from school yesterday.
    他昨天旷课了。
    反义词present adj. be present at出席；到场
练：the presence of social support helps people fend off（避开）illness,and the _______of such support makes poor health more likely.
a.absence                b.absent               c.appearance            d.help
提示:注意此处为对比结构，所以此空中的用词应该和prese