stick to doing sth，坚持做某事，to在这里是介词。例如，I think I'll just stick to doing it the old way.

stick基本含义

v.将…刺入(或插入)；刺；戳；插入；粘贴；粘住；(尤指迅速或随手) 放置;

n.枝条；枯枝；柴火棍儿；球棍；条状物；棍状物;

第三人称单数：sticks

复数：sticks

现在分词：sticking

过去式：stuck

过去分词：stuck

动词+介词to+动名词

1.admit to doing sth 承认做了某事

He admitted having stolen the money.他承认偷了钱。

2.apply to doing sth 适用于做某事

These methods apply to learning English.这些方法适用于英语学习。

3.object to doing sth 反对做某事

He objected to being treated like a child.他反对被当作小孩子看待。

4.see to doing sth 负责做某事

5.stick to doing sth 坚持做某事

Reporters should stick to investigating the facts.记者应坚持调查事实。

6.take to doing sth 喜欢上做某事，逐渐习惯做某事

Soon he took to sleeping late.不久他就养成了睡懒觉的习惯。