1、I've read all the books___ you gave me. A。which感觉有问题，因为前面有all，这个只能填that，但是没有这个答案，所以选which2、There isn't much_____Ican do。C。that3。B。that代表物时多用which，但在带有下列词的句子中用that而不用which，这些词包括当先行词是anything, everything, nothing , none等不定代词时，或者是由every, any, all, some, no, little, few, much等修饰时等，这时的that常被省略 还有先行词前有序数词或形容词最高级修饰时,或先行词就是序数词或最高级时.以及先行词中既有人又有物时.还有句中前面有which时,都只能用that a)在不定代词，如：anything, nothing, everything, all, much, few, any, little等作先行词时，只用that，不用which。All that is needed is a supply of oil. Finally, the thief handed everything that he had stolen to the police. b)先行词有the only, the very, the just修饰时，只用that。 He is the very man that helped the girl out of the water.c)先行词为序数词(the last)、数词、形容词最高级时，只用that。The first English book that I read was "The Prince and the Pauper" by Mark Twin.d)先行词既有人，又有物时。He talked about the teachers and schools that he visited.e)当主句是以who 或which 开始的特殊疑问句时，用that 以避免重复。Who is the person that is standing at the gate.f)关系代词在从句中做表语He is not the man that he used to be.
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