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need ⑴作為情態動詞時主要用在否定句和疑問句中.但是也可以用在用條件的肯定句中.這個條件是:肯定句中必須含有某些含某種否定含義的詞語.例如only ,but ,all,before等或者說句子中暗含某種否定含義. One need only consider the facts .否定含義是:只需考慮這些事實.不必去做別的事. He need do it but once .否定含義是:他不必做兩次以上. All he need do is state his opinion clearly. 否定含義是:只要清楚地陳述自己的觀點.他不必做任何事. 練習題: To become a member of the civic association ,one need only attend three meetings ,and his fees regularly. A. pay B.to pay C.paying D.paid ⑵didn't need to 和needn't have done 的區別: 前者表示沒有必要做實際上也沒有做某事.后者表示做了不該做的事情. They didn't need to come here.他們不必來這兒. They needn't have come here.他們本來不必來這兒 They did not need to arrive so early .他們不必很早到達. She was too nervous to reply ,but fortunately she did not need to say nothing . 她緊張的無法答話.但是幸運的是她什么也不需要說. You needn't have told them that .你本不必把這件事情告訴他們. 練習題: ①You such a long essay ,the teacher only asked for 300 words ,and you have written 600 words . A.mustn't have written B.needn't have written C.ddn't have to write D.didn'need to write ②You all those calculations !We have a computer to do that sort of thing. A.mustn{'t have done B.must not have done C.shouldn’t have done not have done 【查看更多】

最近你所在的學校選出一男一女兩名學生作為學校的形象大使，希望他們可以成為其他學生學習的模范。為此學生中展開了激烈的爭論。請你根據下列提示，以“Do we need image ambassadors?” 為題給某英語報紙寫一篇文章。

注意：1. 詞數: 120左右。2. 詞匯： image ambassador 形象大使。

3. 短文的開頭已為你寫好，不計入總詞數。

　　Recently my school has chosen a boy and a girl to be its image ambassadors and hopes that others can learn from the two model students.

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下面的一段文章為課文原文的濃縮，仔細閱讀，根據原文章內容將其補充完整，并盡量背誦。下列詞匯作為參考。

　　What is called an advertisement? The most 　　1　　 types of adverts are those which give 　　2　　 about certain products and their companies．But now in a society where products are in direct 　　3　　 with each other, the adverts need to 　　4　　, and 　　5　　 the attention of the public, and modern 　　6　　 of design　are 　　7　　 to produce the most attractive advertisements, which people 　　8　　 looking at．

　　With the development of advertising industry, those which 　　9　　 the highest 　　10　　 of graphic design with ideas 　　11　　 with the product are beginning to 　　12　　．In order to appeal to people’s interest and curiosity, top advertisers use humour 　　13　　 new and unusual ideas to 　　14　　 people．

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