had to be built为啥加had?site had to be found for it andpedestal had to be built.had是做什么的?是had还是had to

had to be built为啥加had?site had to be found for it andpedestal had to be built.had是做什么的?是had还是had to had to be built.built不是v吗?为什么在be后 to后面到底什么时候才加be?took almost every means she could find to practise these high notes.a site had to be found for it and pedestal had to be built.上面这2句话中,为什么第一个find to 后面没有加be啊?she did not want to b the building ( ) next month will be a modern hospitalA.built B.being built C to be built D be built another primary school is reported __for kids in street now.a to have been builtb to have built c being built d to be building为啥不选d He said a new hospital ( ) in two weeks.a.will be built b.would be built c.had built d.was built答案是什么,又是为什么呢? we must be at the station to meet her为啥要加be?we must be at the station to meet 为啥要叫be 去掉行不行? 被动语态是由be+过去分词构成的,但是有些被动语态的句子并不是这个结构啊,例如：I am not so easily deceived.(没有BE).Our house was built in 1988.（built非过去分词）.为什么有些句子的be动词前面要加ha To be or not to be,that's a question..ha ha 翻译 The bridge ___ next year will be very long.A.being built B.to be built C.built D.buildingThe bridge ___ next year will be very long.A.being built B.to be built C.built D.building The magnificent museum is said ___about a hundred years ago.A.to be built B.to have been built C.to have built D.to have being built The bridge is supposed to be built to be built是定语The bridge is supposed to be builtto be built是定语还是状语?理由 向高手请教下Birds are built to fly Be built to 帮忙翻译一下下面这个句子 I want to restore the nature,to be a bad girl.Ha ha ha . built to Never be afraid to try,remember...Amateurs built The stone bridge __ _ last year is very beautiful.A.built B.was built C.being built D.to be built Although ____ thirty years ago,the house looks very beautiful.(build)答案上给的是 built我不明白为什么不能填 to be built或being built以及 to be built being built