【題目】Fill in each blank with the given word in its proper form:

【1】The discovery of the structure of DNA is one of the greatest scientific _________ (achieve) of the 20th century.

【2】Did Sasha and his family have any ________ (embarrass) experiences after they _______ (immigrant) to Canada?

【3】The _________ (theft) have admitted breaking into an apartment building on _________ (nine) Street at midnight two days ago.

【4】When he heard the strange noise, he went upstairs _________ (hurry) to see what had happened.

【5】We went on with our _________ (discuss) after a short break.

【6】The senior citizen used to be a very _________ (experience) English teacher before he _________ (retirement).

【7】Reading more books will help you make progress in writing _________ (compose).

【答案】

【1】achievements

【2】 embarrassing had immigrated

【3】 thieves Ninth

【4】hurriedly

【5】discussion

【6】 experienced retired

【7】compositions

【解析】

【1】句意：DNA結(jié)構(gòu)的發(fā)現(xiàn)是20世紀(jì)最偉大的科學(xué)成就之一。

“achieve”實(shí)現(xiàn)，完成，動詞。根據(jù)語境可知，此處應(yīng)為其名詞形式achievement成就，可數(shù)名詞。根據(jù)句中“one of the greatest scientific _____ (achieve)”可知，此處是最高級的固定搭配，名詞應(yīng)為復(fù)數(shù)形式，表示“……中最……之一”。故答案為achievements。

【2】句意：Sasha和他的家人在移民加拿大后有過什么尷尬的經(jīng)歷嗎？

“embarrass”使尷尬，動詞。根據(jù)語境可知，此處應(yīng)是其形容詞形式embarrassing“尷尬的”作定語修飾experiences；“immigrant”移民，名詞。根據(jù)語境可知，從句主語they后面應(yīng)是其動詞形式immigrate“移民”，由“after”可知，本句是由after引導(dǎo)的時(shí)間狀語從句，在本句中從句動作發(fā)生在主句之前，主句為一般過去時(shí)，則從句為過去完成時(shí)，即had+過去分詞。故答案為embarrassing，had immigrated。

【3】句意：竊賊承認(rèn)兩天前午夜闖入了第九大街的一棟公寓樓。

“theft”偷竊，可數(shù)名詞。根據(jù)語境可知，“have admitted”前應(yīng)為主語thief小偷，盜賊，可數(shù)名詞，根據(jù)句中“have admitted”可知，此處應(yīng)為thief的復(fù)數(shù)形式thieves；“nine”九，基數(shù)詞，根據(jù)語意可知，“第九大街”中的第九應(yīng)為序數(shù)詞Ninth。故答案為thieves，Ninth。

【4】句意：當(dāng)他聽到奇怪的聲音，他急忙上樓去看看發(fā)生了什么事。

“hurry”名詞：匆忙，動詞：催促。根據(jù)語境可知，此處應(yīng)是用其副詞形式hurriedly來修飾動詞went。故答案為hurriedly。

【5】句意：短暫休息后，我們繼續(xù)討論。

“discuss”討論，動詞。根據(jù)語意可知，句中的our為形容詞性物主代詞，其后應(yīng)接名詞，故此處應(yīng)為discuss的名詞形式discussion討論，此處不可數(shù)。故答案為discussion。

【6】句意：這位老人在退休前曾是一位非常有經(jīng)驗(yàn)的英語老師。

“experience”經(jīng)驗(yàn)，名詞。根據(jù)語意可知，此處應(yīng)為其形容詞形式experienced有經(jīng)驗(yàn)的，作定語修飾名詞“English teacher”；“retirement”退休，名詞。根據(jù)語意可知，從句主語he之后應(yīng)為其動詞形式retire退休。由句中“before”可知，本句為before引導(dǎo)的時(shí)間狀語從句，從句動作發(fā)生在主句之后，主句用一般過去時(shí)，則從句為一般過去時(shí)，故此處應(yīng)為retire的過去式retired。故答案為experienced，retired。

【7】句意：多讀書有助于你在寫作方面取得進(jìn)步。

“compose”創(chuàng)作，動詞。根據(jù)語意可知，句中“writing”后應(yīng)接賓語即compose的名詞形式composition作文，創(chuàng)作，可數(shù)名詞，在此處應(yīng)為其復(fù)數(shù)形式。故答案為compositions。

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