1//rather than do something属于不定式作介词宾语的范畴吗？类似but to do ,except to to？

【答】rather than do sth. 是个省略说法，只保留了动词不定式。这时， rather than 用作“连词”，连接两个并列的成分。

rather than 是一个常用的固定短语，表示“取舍关系”，rather than 之后的部分被否定（舍去），意为“而不是”。那么，rather than 之后可以跟什么成分呢？

当rather than 表示“而不是”的意思时，它后面可以跟名词、代词、形容词、副词、介词短语、不定式、现在分词、过去分词、甚至从句，但这些必须和前面的成分是并列同等的。例如：

I like football rather than basketball. (名词)

You should go there rather than I.（代词）

These shoes are comfortable rather than good-looking.（形容词）

He writes fast rather than carefully.（副词）

She did it by herself rather than with the help of others.（介词短语）

I prefer to walk there rather than take a bus.（不定式）

She was smiling rather than laughing.（现在分词）

He was rewarded rather than punished.（过去分词）

I would go to see my uncle right now rather than when I have time some day.（从句）

上述例句中，rather than 之后实际上是省略了与前面相对应的成分。

1//对于more than的以下的用法，than是什么词性呢？

【答】以下例句中，more than 看作一个固定搭配，副词用法，表示“程度”。

本义是“不仅仅；远不止；远非”。

引申为“十分；非常”。

在不同语境中，本义和引申义都可取。

1后接形容词，

▷They were more than glad to help us. （非常高兴）

2后接副词或分词

▷The girl was more than slightly hurt.（不只是轻伤）

这女孩伤得可不轻。

▷She behaved more than fairly to him. （十分公正）

她对他十分公正。

▷I was more than surprised; I was astonished.（不仅仅是惊讶）

我不止是诧异，简直是大吃一惊。

3后接动词

▷He more than hesitated to promise that.（远非犹豫不决 = 几乎拒绝）

他几乎是拒绝答应那件事