dentists always ask questions when it is impossible for you to answer是什么句形请说明一下能说明那是主句那时从句吗

Dentists always ask questions when it is impossible for you to answer这里的 for you to answerit is when解释下 谢谢 dentists always ask questions when it is impossible for you to answer是什么句形请说明一下能说明那是主句那时从句吗 语法dentists always ask questions when it is impossible for you to answerdentists always ask questions when it is impossible for you to answer（It）谁告诉我到底要不要括号的?为什么要省略? Never assume,always ask! It引导的形式主语请问这俩句话哪句是形式主语?1.it is difficult for us to learn English2.Dentists always ask question when it is impossible for you to answer.在请问：为什么第一句中to learn后面有English,而第二局中to Did you want to tell me something?中译英（大家帮我看看我哪里译错了?）Did you want to tell me something?Dentists always ask some questions of you at the time when you have no way to answer them.My dentist had just helped me pull a too Dentists always ask questions when it is impossible for you to answer这句请解释下 理解不透牙科医生们总是在你无法做出回答的时候向你提出问题怎么掌握这句话的关键点,听了感觉怎么也翻译不好.这句的 Dentists always ask question when it is impossible for you to answer.1.在这个it is impossible for you to answer的结构中的answe是不需要接宾语的,因为他的宾语就是前面的it2.这和it is difficult for us to learn English 是不 always ask myself what you got . Always ask for the 翻译好点 翻译 always ask for such a milk Our teacher always ( )(ask)us ( )(help)each other Tom always ask many questions about signs.哪儿错了 what never ask questions but always gets answers? Always ask for my e-mail address and password是什么意思 Jack always keeps on _____ (ask) his teacher questions. Gina always asks.为什麽ask要加-s? Gina always ask的一般疑问句和特殊疑问句