高中英语语法非谓语动词讲解且充当定语的不定式不含有将来意义或情态意义,却经常含有过去时意义
Shewasthefirsttocome
在下列固定词组或短语之后要跟不带to的不定式hadbetter„hadbest„wouldrather„(than„)wouldsooner„than„cannothelpbutcannotbutcannotchoosebut
may/mightaswell„donomorethan„12
wh-连接代词、副词后跟不定式构成的短语,可在句子中做主语、宾语、表语,还可以做定语
(why和if后不能直接跟动词不定式)它的作用相当于一个名词性从句,通常在某些动词(如tell,know,imagine,learn,decided,forget,remember,consider,understand等)后面做宾语,有时也用作主语、表语、同位语等
如:Hedidn’tknowhowtoanswerher
Whentostarthasnotbeendecided
Idon’tknowwhotoaskadvicefrom
Wouldyoupleaseadvisemewhichtobuy
Pleaseexplain(tome)wheretobeginandhowtodoit
Theyexchangedviewsonthequestionofwhomtoelect
注意:按英语习惯,疑问词why后面通常不接不定式
但在以why或whynot开头的省略型疑问句中,其后可跟不带to的不定式
如:Whygetupsetjustbecauseyougotabadmark
Youarelookingtired
Whynottakeaholiday
Whentostarthasnotbeendecided
like(wouldlike),love(would