base on放句首是不是一定要固定用based on?

base on放句首是不是一定要固定用based on? 用 base on造句 our opinions should___ factsa,base on b.be based on c.base upon d.ba based base on怎么用?给个句子 关于base on的用法Don't you believe what he said?His story is ______nothing.A.based on B.base on C.base at D.basing about base on造句 base on 英语翻译 we need to have some practice( ) our theory.A .on which to base B .to base C.to baseD.on that to base 为什么选A！ base in 用法base in base on 区别 base的用法与例句,准确一点.希望列举是初三水平就好，用base on和be base on等 base a on b和a be based on b一样不 Many students believe the choice of theur courses should ( ) their own interestA.be based on B.base on C.be basing on D.base at 英语翻译The professor could hardly find the sufficient grounds_______his arguments in favor of the new theory.A.to be based on B.to base on C.which to base on D.on which to base The professor could hardil find sufficient grounds _____hia arguments in favor of the new theory.A.to be based on B.to base on C.which to base on D.on which to base 答案：D为什么 说思路、 The professor could hardly find sufficient grounds __his arguments in favour of the new theoryA.to be based on B.to base on C.which to base on D.on which to base The professor could hardly find sufficient grounds( ) his arguments in favor of the new theory.A.to be based on B.to base on C.which to base on D.on which to base应该选择哪个?原因是什么? The professor could hardly find necessary grounds_______his arguments in favour of the new theory.A.to be based on B.to base on C.which to base on D.on which to base选什么?why? the scientists needed to do a series of scientific experiments____his new theory.A.on which to base B,to base on which C which to base on D which to be based on