简介:英文中由It构成的句型,可谓色彩斑斓.在大学入学试题中倍受考官青睐.现将中学英语教材中It的常用句型结构归纳于后,供广大中学生参考:1.It作形式主语.不定式短语作真正主语:a.Ittakes(sb.)sometime+todosth.…Ittakesmorethanthree.daystogettherebyspaceship…b.Itis+adj+forsb.+todosth.…ItwasnotrightforthesouthtobreakawayfromtheUnion.c.Itis+adj.+ofsb.+todosth.Itwasfoolishofhimtowastemoneyonsuchtrifles:d.Itis+one’sturn(pleasure,duty)+todosth.Itwasmyturntorecitethetext.2.It作形式主语,动名词为真正主语.It’snousecryingoverthespiltmilk.
简介:“祈使句+陈述句”是英语中经常出现的句型,常以and或or作连接词语。祈使句部分含有条件意义,用and连接时相当于肯定的条件句.用or连接时相当于否定的条件句,如:Turnontheradioandaprogrammewillcometoyoufromabroadcastingstationmilesandmilesaway.=Ifyouturnontheradio,aprogrammewillcometoyoufromabroadcastingstationmilesandmilesaway.