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T:We should pay attention to that.After class,have a discussion in groups and try to write down as many as you can.The third method of word formation is Compounding,which is a process by which two independent words are put together to make one word.Words which are formed by this method are called compounds.Some of them are connected with a hyphen.Some are written in one word and some are still separate,such as blackboard;man-made;up-to-date;warm-hearted;post office;writing desk etc.There are a lot in every page.I mean,they are common,aren’t they? Ss:Yes,they are. T:The last method is Derivation.That is to say,we add an affix,a prefix or a suffix to a root.Generally speaking,when a prefix is added to a word,it will change a word in meaning but it will not change its part of speech.Some suffixes,when added to words,can change their parts of speech and a few their meanings and parts of speech.Who can shows us which suffixes can cause to form nouns,verbs,adjectives or adverbs? S12:Suffixes which can transform some words into nouns when added are:-er; -or;-ess; -ion; -ship;-ure;-ty;-ance;-hood etc. S13:The suffixes -ful;-less;-able;-al;-y;-like;-en;-ed etc. can transform one word into an adjective. S14:The suffixes such as -ize;-en;-ify can transform some words into verbs. S15:The suffixes -ly;-ward;-wise can transform some words into adverbs. T:What about “-teen;-ty;-th”? S16:They can help form some numerals. T:Well done!I hope all the others can remembers as much as they do. (责任编辑：admin) |