Unit 4 Grammar and usage 课件-高中英语牛津译林版（2020）必修第一册

1、 Unit 4 Grammar and usageLack enough sleep time.Cannot fall asleep even if you are very sleepy.Often wake up suddenly in the midnight.Have dreams all the night and feel more tired.Do you have these sleep problems?What factors may lead to sleep problems? Suffer from too much stress. Eat too much or t

2、oo little. Face a new environment. Have extreme feelings. Have too much noise. Watch frightening films. Some illnesses Grammar and usage: Think and shareHow do sleep problems affect our life? Feel sleepy and tired in the day. Dont concentrate in class / work. Have a poor health / body / memory / app

3、etite. Have depressed feelings. Have a dull skin. Be slow in thinking. Be overweight or very thin. Grammar and usage: Think and shareBelow is part of a magazine article about sleep problems.Find out the structure of it after reading carefully.Grammar and usage: Read the passage on P48/Introduction/D

4、etailed information/Conclusion/What are sleep problems?/Causes of sleep problems/Bad effects of sleep problemsThe seriousness of sleep problems for teenagersIf you are asked to go on with the article, What will be talked about in the next paragraph? Advice on how to make changes in life to deal with

5、 sleep problems.Grammar and usage: Brain storm (P48) 限制性定语从句 (restrictive relative clause) 指修饰名词、代词或名词短语的从句,对所修饰的对象加以限制，表示“的(人) 或的(物)”。从句不可去掉，一旦去掉主句的意思则不完整。被修饰的名词、代词或名词短语称为先行项或先行词(antecedent)。由关系代词引导的限制性定语从句名词可以被形容词，介词短语，非谓语动词等修饰。如果要表达稍微复杂一点的意思，简单形容词或者介词短语等不能满足，要借助一个句子来修饰名词。I like diligent studentsI

6、 like students who finish their homework carefullyA real friend is someone who walks in when the rest of the world walks out.A real friend is someone whose support we can count on. A real friend is someone who sees our true self, not just the face that we show to the world. Yet these days, the moder

7、n tools that keep us connected are eating away at the meaning of friendship.Social media like blogs has come between us and the friends whom we love.“Sharing” our experiences on social media is not enough to express the values which matter most to us. “Liking” our friends photos online does not deve

8、lop the connection which we share. Please underline the restrictive relative clauses in this article. (when, where, why, who)Grammar and usage: Read and underline (P48)that / whichwhenP48wherethat / whichwhy/ for which1. a thing of the past 2. contribute to 3. in the short / long term 4. be at the risk of doing 5. a large amount o