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— Certainly not! That would be ________ my dignity.A. beneath B. under C. beyond D. above10. —What do you have to do tomorrow?— I39。ll have to ________ in a conference.A. join B. taking part C. attend D. participate11. Modern technological advances are being made, but ________.A. with highly considerable expenseB. at a great expenseC. with great expense involvedD. by a lot of expense12. — Why didn39。t you go to the lecture yesterday evening?— ________, I changed my mind.A. On a second thought B. By the second thoughtC. On second thoughts D. By second thoughts13. ________ one time, Manchester was the home of the most productive cotton mills in the world.A. On B. By C. To D. At14. — Wasn39。t the issue settled?— No, the two sides are still ________ conflict.A. in B. during C. on D. with15. — How do you like these articles?— They are not much ________ demand now.A. on B. in C. at D. for(后設(shè)答案,大家不要偷看哦~(*^__^*) 嘻嘻……)KEYS1. C 2. B 3. B 4. B 5. D 6. A 7. A 8. B 9. A 10. D 11. B 12. C 13. D 14. A 15. B介系詞和其他詞性的差異介系詞和連接詞都具有關(guān)聯(lián)或連接功能。如after, as, before, since, until等詞,即可以既可作介系詞又可作連接詞用,不過介系詞引導(dǎo)的是名詞性或名詞化的賓語,而連接詞引導(dǎo)的是一個從屬分句。例如1 the day before she arrived2 the day before her arrival第一句的before是連接詞,后面接一分句,而第二句的before是介系詞,后面接一名詞賓語。介系詞常在形式上與副詞一致,在詞義上與副詞相近的詞類。例如1 She looked up the word.2 She looked up the hill.3 She walked across the street.第一句中的up和第三句中的across都是帶賓語的介詞(up the hill, across the street)。然而,第二句中的up是副詞,因為在短語動詞look up中up具有位置的可移動性。介詞的位置一般放在賓語之前。疑問句中可放句末。若含介詞的動詞短語為被動型態(tài)時,亦放句末。但在疑問句里,介詞可用在句末(或子句末),這叫作介詞后置。例子:I39。ll wait for you at the school gate then.那么,我在學(xué)校門口等你。We work hard at English.我們很努力學(xué)英語。What are you talking about?你們在談?wù)撌裁?Who were you having supper with?你和誰共進(jìn)晚餐?I don39。t know what he came here for我不知道他到這兒來干什么。,介詞也應(yīng)放在句末。因為它和前面的動詞構(gòu)成的短語不可分離。例子:The young trees must be looked after very well.必須細(xì)心愛護小樹。The children were taken good care of.孩子們得到很好的照顧。