(
课件网) Exploring the Topic Grammar in Use UNIT 4 Changing and Growing 通过本节课的学习, 同学们将能： 1.掌握后缀-less 和-ful的用法。 2.掌握过去进行时的用法。 学习目标 Grammar in Use Suffixes -less and -ful Look at the pictures and read the sentences. Pay attention to the words in bold. Activity 1 The doctor feels helpless to save the patient’s life. He wishes he could be more helpful. The symbols are very useful to pay online, but they are useless without a cellphone. Your boss doesn’t allow any careless mistakes, so you’d better be very careful in your work. Activity 1 后缀是置于单词或词干后用于构成新词的一个或一组音节。也就是说，用作一种词类的词，例如名词经添加后缀之后可以转变为不同的词类，例如形容词。后缀是一种重要的构词法，通过后缀常常可以判断出一个词的词性。在语言学里，后缀，又称词尾，是一种后置于其他词素后的词缀。 后缀 help help use use care care ful less ful ful less less ful 后缀：词根多为动词/名词， 加-ful 变形容词，表“具有……特性” help use care +ful ———helpful 有帮助的 +ful ———useful 有用的 +ful ———careful 细心的 ful 后缀：词根多为动词/名词， 加-less 变形容词，表“缺乏……特性” help use care +less ———helpless 无帮助的 +less ———useless 无用的 +less ———careless 粗心的 Activity 2 Complete the sentences with the correct form of the given words. 1. Li Hong was _____(joy) because she got a good grade in the exam. 2. After years of hard work, my uncle became _____ (success) and now he lives an easy and comfortable life. 3.You were doing very well yesterday. Be _____(hope) and you’ll succeed. 4. He learned a lot after visiting many_____(wonder) places. 5. Smoking is _____(harm) . No one should smoke in public. joyful successful hopeful wonderful harmful Activity 3 Complete the text and fill in the blanks. Youth is an important period of time for growing up. It can be hard and _____, but you grow in every way and learn more about life. Sometimes, you may feel _____. But your teachers are always there for you, and your friends can also be _____. Some people may say something _____ to you, but they might not mean it, and you talk to them and learn to communicate with people. Maybe, you find some subjects difficult and _____. However, you will understand the true value of knowledge later on. In a word, youth is a _____ experience. You should make the most of it. aimless helpful hurtful painful priceless useless painful aimless helpful hurtful useless priceless Youth is an important period of time for growing up. It can be hard and painful but you grow in every way and learn more about life. Sometimes, you may feel aimless. But your teachers are always there for you, and your friends can also be helpful. Some people may say something hurtful to you, but they might not mean it, and you talk to them and learn to communicate with people. Maybe, you find some subjects difficult and useless. However, you will understand the true value of knowledge later on. In a word, yout ... ...
