不定式的否定—They are quiet,aren't they?—yes,they are accustomed________at mealsA.to talk B.to not talkc.to talking D.to not talking这个地方的否定怎么在后面啊?不是应该否定成aren't么?

不定式的否定—They are quiet,aren't they?—yes,they are accustomed________at mealsA.to talk B.to not talkc.to talking D.to not talking这个地方的否定怎么在后面啊?不是应该否定成aren't么? 为什么be accustomed to 这种带be动词的短语的否定形式不能在前面的谓语动词上做否定?这种带be动词且后面有to作介词或不定式标志的短语这个题目是这样的：—They are quiet ,aren't they?—Yes ,They ar Are they good friends?的肯定回答和否定回答 she thinks they are scary的否定句 are they behind the grapes?的否定回答 Are they red?的肯定回答和否定回答 关于不定式的否定问题 to not 与 not to 区别?-They are quiet,aren't they?-Yes.They are accustomed ___ at meals.to not talking但是参考书上又写说 非谓语动词的否定式均在to前加not 那本题为何在to后加not呢 是不 they are difficult to make 这里的不定式、做什么成分 英语不定式的否定的问题? 有关动词不定式的问题they are an artistic pleasure(艺术的享受) to look at.这句话的解释该不定式在句中是什么成分?那they are restful to talk to.呢不定式在句中作什么成分？ 什么是英语不定式的否定转移 They are tall boys的否定句一般疑问句和肯定回答和否定回答 they are my good friends改否定 are they watching TV?改为否定句 They are tasty改成否定句 They are English cars改为否定句 They are good friends.改为否定句 Are they boys?肯定否定回答