18A UNIT3 Study skills教学目标：掌握 the suffixes ful and less 的用法。了解后缀法，并能拓展其他类似的后缀用法。教学重点：重点：Master the usage of the suffixes ful and less.Step Presenta tion呈现图片和句子1.Simon got 100 points in the exams. So he is very . But Jane only got 80 points. She is very .(care)板书 careful-careless2.Jack is a good boy. He often helps others. He is . But his brother, David, dislikes staying with others. He is very .(help)板书 helpful-helpless3.Look at the picture. Is the knife useful? Another picture: What about that one?板书 useful-uselessQ: Can you tell me sth about them? (Let students watch the 6 words. ) At last, the teacher and the students say together: we can add ful or less to some nouns to form adjectives. The suffix ful means “full of”. The suffix less means “without”.板书：n.+ful=adj. n.+less=adj.Step Practice1. Can you remember any other words like them? (Let students think freely.)n. n.+ful=adj. n.+less=adj.colour colourful colourlessharm harmful harmlessthank thankful thanklessRead these words and finish A on page A39.2. Let students read the answers.Q: All the words above have suffixes ful and less? You can use your dictionaries.S: T: Yes, “sleep” and “end” dont have the suffix ful. And another word “wonder” can be changed into “wonderful” but not “wonderless”.3. Read the words and master their meanings. (use dictionaries) Then make sentences with these words. For example: They are telling tasteless jokes in the tasteful room. (You can also use them in 2 sentences.)4. Finish the exercises B on page 39. Check the answers. Let students underline some important phrases.Step Continuation2We can add ful or less to some nouns to form adjectives. What can we also add to any other nouns to form adjectives? （Let students recall the words.）n.+y=adj. :rainy, cloudy, windy, snowy, healthy, lucky, noisy, icyn.+ous=adj. :danger+ous=dangerousn.+ly=adj. :lovely, friendly(指导学生将这些词语抄在笔记本上，并在课后查字典，增添同类词)Step IV ActivitiesHave a competition to find out who can recite these words with suffixes more.Homework Master the usage of these words and recite them.Add some more words with suffixes on the note and remember them.