i have given considerable thought to matter中thought是名词吗？用think或thinking行不？我语法很烂！

thought 是think 的名词状态

think = i think about you all the time.
thinking = I am thinking about you

think 和 thinking 都是动词，这里是不能用动词的

这里的thought就是名词，用think或thinking是动词，动名词是不行的

thought 是名词

considerable 是形容词，所以后面应该跟名词

动词think 和 动名词thinking 均不适用

动名词 还是用 be doing/ go doing 的句式比较多，或者跟在某些动词后面作固定结构，比如：stop doing --停止做某事