About combining adjectives


I have some confusion I want to clarify. I understand that to combine
adjectives we need to use で for な adjectives and て form of い adjectives. So
I'm pretty sure that these sentences below are correct:

> 暖かく **て** おいしいです - It's warm and delicious.  
>  きれい **で** 有名な彼女 - A beautiful & popular girl.

What I want to clarify is...

  1. I wasn't sure how to combine い and な adjectives together... Can I do this?

> 暖かく **て** きれい **で** 有名な人です - A warm, beautiful and popular person.

  2. Since な adjective is basically a noun, could we use と to combine them?

> あの彼女はきれい **と** 有名です - That girl is beautiful and popular.

  3. I wasn't sure if this is correct:

> 高く **て** おいしくなかったです - It was expensive and didn't taste good.




  1. Yes, you can combine both types of adjectives like that.

  2. No, you can't. You have to use で.

  3. Yes, that's a correct sentence. When you join two _verbs_ using -て, ない may be applied to the two verbs as a set (see [the discussion here](https://japanese.stackexchange.com/q/30515/5010)), depending on the context. I don't think the same thing happens for two _adjectives_. Nevertheless, while this sentence makes sense as-is, I feel it's safer to add a comma after the first adjective.

> 高くて、おいしくなかったです。




  1. Yes, you can combine both types of adjectives like that.

  2. No, you can't. You have to use で.

  3. Yes, that's a correct sentence. When you join two _verbs_ using -て, ない may be applied to the two verbs as a set (see [the discussion here](https://japanese.stackexchange.com/q/30515/5010)), depending on the context. I don't think the same thing happens for two _adjectives_. Nevertheless, while this sentence makes sense as-is, I feel it's safer to add a comma after the first adjective.

> 高くて、おいしくなかったです。

