问个语法知识some books are to be tasted,others to be swallowed,and some few to be chewed and digested.不是说一句话里面要是没有连词就不能有两个以上主语吗?谁能帮我分析下

问个语法知识some books are to be tasted,others to be swallowed,and some few to be chewed and digested.不是说一句话里面要是没有连词就不能有两个以上主语吗?谁能帮我分析下 问个语法知识Nebraska has floods in some years,_____.A.in others droughtB.droughts are othersC.while other droughtsD.others in drought为什么选第一个,谁帮我仔细分析一下 some books are to be tasted.我知道这句话的意思是,有些书可以浅尝辄止.想问的是,这是个什么语法,BE动词后边怎么跟to啊? some of his books --------some of his books are very exciting这是书的句子,我改成some his books are very excitinghis some books are very exciting这个语法上有错吗?如果错了,为什么?请会的答,不太相信自己就不要答了（ 19.Professor Mackay told us that ______ of lead are its softness and its resistance.a.some property c.propertiesb.some properties d.property请高手给个确切的答案,再讲下其中的语法知识,我将感激不尽! Some,here,books,are.连词成句 these are 后面要加some吗?如these are some books还是these are books some of his books are very exciting这是我在书上找的句子如果我将他变成some his books are very exciting这个语法上有错吗?如果没错,请答答some有什么词性?当他是some of时是什么词性?当他是some his books句子 They are some pens,some books but cards 填空,有关在.旁边、在.后面、在.前面等.There are some books on the desk.问：（）（）（）the books there is a box. I have many books.Some are new,()are old. here you are包含的语法知识 There are some books in the bookcaes对some books 提问 There are some books on my desk.对some books进行提问应该如何提? there are some books on the teacher's desk对some books 提问 There are some books in their bags.------ ------ some books in their bags.改为同义句 some books are in the box?对“some books”画线部分提问两分钟内 These are the books on history.这句语法对吗?