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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.
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2017-07-14T12:03:32.053
50368
2020-09-16T01:45:58.357
2020-09-16T01:45:58.357
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question
adjectives
About combining adjectives
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。
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2017-07-14T14:28:47.647
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2017-07-14T14:28:47.647
5010
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answer
Based from the findings:

  1. 暖かくてきれいで有名な人です combines both i-adjectives & na-adjectives. To apply this rule, just think which one is going first (i.e. i-adjective, so that 暖かい becomes 暖かくて).

  2. あの彼女はきれいと有名です is incorrect usage of "と" because combining both na-adjectives requires "te-form" (picking きれいで and dropping -な at first adjective) instead of "と" particle which only used for _nouns and noun phrases_. So then the correct sentence should be あの彼女はきれいで有名です。

  3. 高くておいしくなかったです indeed is a right sentence. The first i-adjective (高い) & second i-adjective (おいしい, using negative past form ーなかった) joined together, requires first adjective to be transformed into ーくて form (i.e. 高くて). This similar construction apply for 面白い, 暑い & other i-adjectives.

However there is one exception when combining i-adjectives: いい related suffix
replaced with よくて because derived from 良い & following same conjugation with
it, e.g. かっこいい => かっこよくて.

Example: あの彼女は、お金持ちで、かっこよくて、有名です。 => That girl is rich, handsome & popular.

NB: かっこいい is abbreviated form of two words merged in one: 格好 & いい. On the
other hand, we know that 嫌い is another exception which this word derived from
嫌う, and it follows na-adjective rules (嫌いで, not 嫌い + くて).
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2017-07-14T15:27:49.870
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2017-07-14T15:27:49.870
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answer
> 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.

These are grammatical. (Just 彼女 is a pronoun for a known girl though.)

> **1.** I wasn't sure how to combine い and な adjective together... Can I do
> this?  
>  **温** かくてきれいで有名な人です - A warm, beautiful and popular person.

It's grammatical. The Japanese and English versions exactly say the same
thing.

But because of the word 有名, I tend to expect it to explain the reason of being
famous like 温かくてきれい **なことで有名な人です**.  
Another example for you: 静かで真面目で落ち着いた人です.

> **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.

It's ending up saying "She is the beauty and fame itself" because you treated
them as nouns.  
I tend to expect it something like these:

> きれい **だと言われています** or きれい **だということで有名です。**
>
> 温かい **と言われています** or 安い／おいしい **ということで有名です。**

-

> **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

It's good, but a trick to make it smoother is ありません.  
高くておいしくないです >> 高くておいしくありません。  
高くておいしくなかったです >> 高くておいしくありませんでした。
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2017-07-14T20:36:23.100
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2017-07-14T20:36:23.100
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answer