Unit 5 Discovering useful structures（二）（介词结构的定语从句）课件 2021-2022学年高中英语人教版（2019））必修第一册

Grammar 定语从句 (3) －介词结构的定语从句 The Attributive Clause (3) 1. 介词位置：关系代词充当介词的宾语时，一般情况下，介词可前置或后置。 1) Do you want a friend ___________ you could tell everything to, …? =Do you want a friend to ________ you could tell everything, …? 介词 +which/whom/whose (whom/who/that) whom 2) This is the factory _____________ I once worked in. =This is the factory in___________ I once worked. =This is the factory __________ I once worked. 有些介词更适合前置。如: where which (that/which) 3) I remember the day/year______ which the war began. =I remember the day/year ______ the war began. 4) The USA is a large country ____ which many different dialects are spoken. =The USA is a large country ____ many different dialects are spoken. on/in when in where 如定语从句中谓语为短语动词, 如look for, listen to, look at, take care of, break into, care about 其介词不能提前。如： 1) The boy _______________ she is taking care of is an orphan（孤儿）. 2) Did you find the book __________ you were looking for? (who/whom/that)