attend to:

注意照料致力于

Attend to the lecture， or you will learn nothing.

注意听讲，否则你什么也学不到。

tend to:

趋向注意易于有…的倾向

Morals tend to be deeply ingrained.

道德观念往往是根深蒂固的。

I'll tend to you four in the morning !等我明儿早晨来打发你们四个罢！

Television tends to glamorize acts of violence .电视往往渲染暴力。

This kind of cloth tends to spot in the rain .这种布容易在雨中弄脏。

Hyperglycemia and glycosuria tend tooccur .可能发生血糖过高或糖尿。

We tend to make mistakes when we do things in a hurry .忙中不免出错。