专业英语四级（从句与虚拟语气）模拟试卷1(题后含答案及解析)题型有：4.GRAMMAR&VOCABULARYPARTIVGRAMMAR&VOCABULARY(15MIN)Directions:Therearethirtysentencesinthissection.BeneatheachsentencetherearefourwordsorphrasesmarkedA,B,CandD.Chooseonewordorphrasethatbestcompletesthesentence.1．Idon’tdoubt_____hecanfinishthetaskontime.A．whyB．thatC．whetherD．when正确答案：B解析：在否定结构和疑问结构中，doubt为及物动词，如doubt后的从句完整无缺失信息，则选that为宾语从句的引导词。知识模块：各类从句2．Idoubt_____theycanswimacrosstheriver.A．whyB．thatC．whetherD．when正确答案：C解析：在肯定句中，及物动词doubt后的宾语从句，多用whether或if引导，表示“怀疑是否，怀疑能否”。知识模块：各类从句3．Idoubt_____heisthemurdererbecauseheisnotonthesceneatthatmoment.A．whyB．thatC．whetherD．when正确答案：B解析：在肯定句中，及物动词doubt后面也可以接that引导的宾语从句，但表示疑虑较大或“不相信”。知识模块：各类从句4．Ihavedoubts_____everyonepresenthasabout_____heistellingthetruth.A．why,ifB．that,whetherC．whether,whomD．when,which正确答案：B解析：此句中有两个从句，doubt为名词，其后第一个从句everyonepresenthas为关系分句，先行词即doubt，从句所缺信息即先行词内容，故选关系代词that作为连词；第二个从句接在介词之后，为宾语从句；再结合肯定句中doubt后接whether或if，以及介词之后只能使用whether，不能使用if表示“是否”，从而得出答案是whether。知识模块：各类从句5．_____before,hisfirstperformancefortheamateurdramaticgroupwasasuccess.A．ThoughhavingneveractedB．AshehadneveractedC．DespitehehadneveractedD．Inspiteofhisneverhavingacted正确答案：D解析：inspiteof意为“尽管，虽然”，后接名词或名词性短语，引导出让步状语。选项A没有主语或逻辑主语，选项B是原因状语从句，选项C的despite不能引导状语从句，因为它是个介词。知识模块：各类从句6．Bitbybit,achildmakesthenecessarychangestomakehislanguage_____.A．asotherpeopleB．asotherpeople’sC．likeotherpeopleD．likeotherpeople’s正确答案：D解析：as和like都可以表示“像……一样”，但as是连词，后跟从句，like是介词，后跟名词或名词性短语；hislanguage与otherpeople’s(language)为比较双方。知识模块：各类从句7．Thedesegregationwasachievedthroughanumberofstruggles,_____havebeenmentionedinpreviouschapters.A．afewofwhichB．afewofthemC．afewofthoseD．afewofthat正确答案：A解析：这里考的是非限制性定语从句，关系代词which前加修饰语。知识模块：各类从句8．_____inthepast,atthemomentitisafavoritechoiceforweddinggown.A．UnpopularhasaswhitebeenB．WhitehasbeenasunpopularC．UnpopularhasbeenaswhiteD．Unpopularaswhitehasbeen正确答案：D解析：as是连词，引导让步状语从句时，往往使用半倒装形式。又