为什么有think it over 而不能有think it about ?

为什么有think it over 而不能有think it about ? think of it thing it of为什么不能用think it of 又是为什么只能think it over不能think over it啊这里有什么语法么? 是think it over 还是 think over it ? 为什么? think it over 是什么意思? think it over是什么意思 ________(think)it over. Think it over,please. think it over录音 Think it over ,I think it's you should think over it ____ you make your own decisionA.beforeB.afterC.thoughD.until为什么不选D think it over=______ 英语中什么时候介词要与宾语倒装例如我们说think about it而不说think it about ,我们说think it over而不说think over it.后者是语法错误,在下不胜受恩感激.不要文不对题, 单句改错,I will think over it,为什么要改为think it over,over 是副词,但还是不是很理解 He can't help us do it ,I think(改为含宾语从句的复合句)I don't think he can heip us do it为什么don't think 能用而think that不能用?除了think这样的单词以外还有那些单词在复合句中有否定意思的要提前? 我想了又想 翻译 是I think ti over还是 I think ti over and over again ? 为什么错了 第一个是I think it over again it 也打错了 ______ before making important decisions A,think of it B,think about it C,think them over D,think th选什么为什么, 英语语法,hardly did i think it impossible这句话为什么有did还用think而不用thought,还有it后面为什么不用is,谢谢 after all是介词短语吗?no longer是副词短语吗?after是介词吗,为什么?think it over think about it还是think it about think over it?