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S12:These words have something in common.Their basic meanings don’t change,and changes for them are just their parts of speech.For example “worker” is formed by adding “er” after “work”.It means “people who work”.So if we add “er” to a verb,a noun is formed.If we add “-ness” to an adjective,a noun is formed.After a verb,we can add “-tion” to form a noun,while after a noun,we need to add “-ful” “-al” or “-y” to form an adjective.Is that so? T:Quite right.In this class,we’ll go on with some rules of word formation. (Teacher uses the multimedia to show the following.) mis-=wrong extra-=outside inter-=between sub-=under under-=below over-=too much dis-=not -marine=sea T:Please look at the screen.Study the meanings of these stems and affixes in pairs and then try to give some examples with the stems and affixes.(A few minutes later)Are you ready?(Ss:Yes.)Now,I’ll ask some students to read out the words they’ve written.Any volunteer? S13:Misconduct, extraordinary, international, subsoil,underground, overcharge, disagree, submarine. (Teacher writes these words on the blackboard.) T:Terrific!Do you understand the meaning of each word on the blackboard? (Not all the students understand them.) T:S13,can you explain them? S13:“Misconduct” means “improper behaviour”.“Extraordinary” means “beyond what is usual or ordinary”.“International” is to say “between nations”.“Subsoil” is to say “layer of soil that lies beneath the surface layer”.“Underground” means “under the surface of the ground”.“Overcharge” means “charge(sb.) too high a price”.“Disagree” means “not agree”.“Submarine” means “a ship that can travel below the surface of the sea”. T:Is that clear?(Ss:Yes.)Now,let’s do an exercise.Open your books and turn to Page 12.Look at Word Study,Exercise 1.Match the words and the correct definitions.I’ll give you two minutes to do it,and then I’ll check your answers. Suggested answers: 1.E 2.F 3.B 4.C 5.D 6.A T:You’re right.Now,let’s go on with Exercise 2.Guess the meanings of the words in italics,using context clues and what you know about word parts,and then translate each sentence into Chinese.First do it by yourself,and then check your answers with your partner.Finally,I’ll ask some of you to finish the exercise.Do you understand? Ss:Yes. T:(A few minutes later)Have you finished? Ss:Yes. (责任编辑：admin) |