2019年成考专升本《英语》动词不定式归纳【一】

2019年成考专升本《英语》动词不定式归纳【一】不定式结构作主语1、不定式前置1)Derive[A]mineralresourcesfrom[B]sedimentaryrock[C]isa[D]majormodernindustrialactivity.2)inthematriculationforpostgraduateinashorttimeisrealyahardnut.[A]Tomakehighscores[B]Tomakelowgoal[C]Tothehighscores[D]Makethelowgoals2、上述形式一般情况不多见，作为考试的规范英语，如果不定式较长，显得头重脚轻,则可由代词“it”作形式主语(形式主语“it”不能由“that”或“this”等其他代词代替)，而将不定式放到后面Itisreallyahardnuttogethighscoresinthematriculationforpostgraduateinashorttime.3)Johnadmittedthatit'salwaysdifficult.[A]forhimbeingontime[B]beingontimeforhim[C]forhimtobeontime[D]ontimeforhim4)Itisdifficultforme[A]tobeconcentrating[B]whilesomeone[C]isusing[D]avacuumcleaner.3、不定式后置的情况不但限于动词是系动词，也适用于其他动词Ittookusagreatdealofeffortstofinishthattask.ItmadehimextremelyhappytogetcontactwithhisfamilyinTaiwansincetheyseparatedmorethan40yearsago.4、不定式结构所表示的动作是谁做的，即不定式的逻辑主语，通常能够在特定的上下文中能看出，也能够通过带“for+名词短语”辨出Itisquiteimportantforustoreadgoodbooksduringtheperiodofgeneralreview(总复习)。Itisnotdifficultforthosewhostudymathswelltopasstheexam.5、在某些形容词(如careless,clever,considerate,foolish,good,impolite,kind,naughty,nice,silly,stupid等)作表语时，不定式后能够加of来引导出其逻辑主语Itisverykindofyoutohelpme./Itisstupidofhimtodosuchasillything.间或也可用for+theretobe表示(而且there后面的不定式只能是tobe)。It'sagreatpityfortheretobemuchtroubleinthecompany.