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1、Unit3 Science and nature,Word power,Prefixes and suffixes Organs of the body,After so many years of learning English, have you found some easy ways to double your vocabulary?,Use prefixes and suffixes,Sometimes you can guess what a word means by looking at its prefix or suffix. Look at the examples
2、and work out the meanings.,anti-,anti-cloning, anticancer,against, opposed to,dis-,un-,disappear, disagree,unfair, unwilling,not, apposed of,in- il- im- ir-,incorrect, incomparable,illegal, illogical,immoral, immodest,irresponsible, irregular,not, without,pre-,preview, preserve,early, before,pro-,pr
3、o-cloning,in favour of, supporting,re-,recreate, repeat, renew,again,Some other commonly used prefixes,non-,not,non-smoker, non-alcoholic, non-profit,inter-,international, interaction, interrupt,between,tele-,telescope, telegram, telecommunication,far off,trans-,transport, translate, transnational,a
4、cross,mis-,misunderstand, mislead, misdeed,wrong,sub-,subtitle, subway, submarine,under,over-,overeat, overwork, overact,too much,tri-,auto-,triangle, tricycle, tricolor,autobiography, autoalarm, automobile,three,self,-able,comfortable, noticeable,worthy of, able to be,-ful,cheerful, thoughtful,full
5、 of, characterized by,-ist,scientist, novelist,someone who does something,-less,hopeless, aimless,without,-ment,agreement, treatment,indicate a state or condition,-ness,dryness, madness,indicate a quality, state or character,Tip,Some words take a hyphen (-) when a prefix is added. We sometimes need
6、to change the ending of a word before we can add a suffix.,Attention !,Usually a prefix will change the meaning of word, while a suffix will change the part of speech of a word.,Some other commonly used suffixes,-al,cultural, national, original,of or concerning,-ion,invitation, competition, protecti
7、on,action or condition of,state of being, skill,-ship,hardship, scholarship, relationship,-dom,freedom, kingdom,condition or state of,of the nature of,-ish,childish, selfish,-proof,waterproof, fireproof, soundproof,protect against,-en,widen, sharpen, shorten,make or become,-ward,eastward, homeward,
8、backward,in the direction of,-like,womanlike, childlike,similar to,Do you think we should protect nature? Complete what an environmentalist is saying below. Use the words from the box.,disrespect, hopeless, illegal, uncertain, understandable,I think cutting down trees should be made(1)_ and tighter
9、laws should be introduced. So many people are showing their(2)_ for nature; they dont seem to care that they are destroying the environment. Sometimes I think we are fighting a(3)_ battle against people who just wont listen. I know scientists have worked hard to achieve scientific breakthrough but i
10、ts(4)_ whether theyll succeed totally.Although its(5)_ that they want to advance technology, I think some things are best left the way they are.,illegal,disrespect,hopeless,uncertain,understandable,Organs of the body,lungs,liver,heart,stomach,kidneys,Key to Exercise B,Brain (2) heart (3) liver (4) l
11、ungs (5) stomach (6) kidneys,Activity 1,If you compare our body to our school life, you will be amazed how similar they are!,Believe it or not,Good matching!,school,body,Cleaners, repairman and security guards Headmaster Teacher Notebook Student,brain liver kidney heart stomach,Activity 2,Believe it
12、 or not,There can be many more comparisons. Just use your imaginations. Following is a poem. Can you find a proper position for each organ?,Without you, , I would be blind as a car with no driver Without you, , I would be cold as no warmth could be sensed Without you, , I would be greedy as I never
13、felt full Without you, , I would fall silent as I could not sing my favorite songs Without you, , I would be evil as I didnt have the power to clean wrongness away Without you, , I would be lost in my own world as nothing, good or bad, could ever find a way out!,brain,heart,kidneys,liver,lungs,stomach,Use the power of word, create your own comparison!,Take care of your organs, and you will be taken care of in turn!,Homework,Read the articles in Part A on page 110 and page111 and do Part B on the same page.,
