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1、1.volunteer作名词讲表示志愿者 volunteer与to连用,表示自愿去做，主动请求去做某事；volunteer to do sth. 例如：Both of us volunteered to paint the house. 我们俩都自愿漆这房子。 volunteer与for连用，作为志愿者，例如：a volunteer for the 2008 Olympics 2008奥运会志愿者2. every four years= every fourth year every other day = every two days every few days (不用a few) (注意
2、:every 不能换成each)3. basis名词，“基础”“基准”之意。复数bases 形容词 basicOn a basis 以。为基础又如 ：on a part-time basis 在兼职的条件下，作为兼职4. admitadmitted-admitted admit sth admit doing sth admit that-clause 容许, 承认, 接纳(1) The thief admitted his crime.(2) I had to admit that I had done wrong.(3) She admitted having stolen the nec
3、klace.(4) At last he was admitted to Beijing University.(5) I admit it to be true.5.强调句型it is（was）+强调部分+that + 句子其他成分eg,Mike wore his new coat to attend the party yesterday.原句It was Mike that wore his new coat to attend the party yesterday.强调主语It was Mikenew coat that he wore to attend the party yes
4、terday.强调宾语It was to attend the party that Mike wore his new coat yesterday.强调目的状语It was yesterday that Mike wore his new coat to attend the party .强调时间状语谓语用强调句型是不能来强调的，但是可以用助动词do，在谓语前面加上do就能构成强调，但是要注意，他有时态的变化。 12使用本句型的几个注意事项 1被强调成分是主语，whothat之后的谓语动词应该在人称和数上与原句中的主语保持一致。 e.g.ItisIwhoamright e.g.Itish
5、ewhoiswrong e.g.Itisthestudentswhoarelovely 2即使被强调成分是句子中的时间状语，地点状语，原因状语等，也不能用when，where,because，要用that。 E.g.ItwasafterthewarwasoverthatEinsteinwasabletocomebacktohisresearchworkagain. E.g.Itwasinfrontofthebankthattheoldladywasrobbed E.g.Itwasbecauseoftheheavyrainthathecamelate 3被强调成分是作主语的代词，用主格，是作宾语
6、的代词，用宾格 Itwashethathelpedmeyesterday.Itwasmethathehelpedyesterday. 5被强调部分既包括人又包括物，用that不用who ltwasthethingsandpeoplethattheyrememberedthattheyweretalkingabout 区分定语从句和强调句型某些定语从句和强调句型形式差不多，容易混淆。如果去掉itiswas.that句子仍然通顺成立，则为强调句型，不成立不通顺，则为定语从句。 E.g.ItwasthreeyearsagothathewenttoAmericanforafurtherstudy去掉I
7、twasthat句子为ThreeyearsagohewenttoAmericaforafurtherstudy句子通顺，意思完整，那么，这就是一个强调句型。 6.responsibility_形容词 responsible.responsibility for sth.responsibility to do sth.take on the .responsibility承担责任7. replace (vt) 代替; 放回原处= instead of = take the place ofreplace A with/by B 以A 代替BThe old machine should be replaced by new ones.You have to replace the book where they were.
