强调句结构.

强调句结构常考的强调句结构是it引导的句子。Itis(was)被强调部分+that(who)+句子其他部分。此结构强调的成分仅限于主语，宾语和状语。Itisfromthesunthatwegetlightandheat.ItwasnotuntilIhadreadyourletterthatIunderstoodthetruestateofaffairs.典型例题1）Itwaslastnight___Iseethecomet.A.thetimeB.whenC.thatD.which答案C.强调句的结构是：It+be+强调部分+that(who)+主谓句。强调句的连词只有两个，that和who。当强调的部分是人，且为句子的主语时，才用who，其余用that。原句：Myfatherdidtheexperimentinthelabyesterdayevening.强调主语：Itwasmyfatherwhodidtheexperimentinthelabyesterdayevening.强调宾语：Itwastheexperimentthatmyfatherdidinthelabyesterdayevening.强调时间：Itwasyesterdayeveningthatmyfatherdidtheexperimentinthelab.(注意不用when)强调地点：Itwasinthelabthatmyfatherdidtheexperimentyesterdayevening.2）Itistenyears___MissGreenreturnedtoCanada.A.thatB.whenC.sinceD.as答案C.考点是连词用法。本题易误选为A.that.其实本句不是强调句。若是，去掉Itbe…that还应是一个完整的句子。而本句去掉'Itis…that'，只剩下tenyearsMissGreenreturnedtoCanada.不成句。因此本句不是强调句。Itis/was+时间+since…其中is---hasbeenwas---hadbeen.