The usage of 有 in comparisons

Question

The verb 有 can be used to form a sentence in a way of comparisons of equality as follows. (as ~ as)

今天有昨天热。Today is as hot as yesterday.

他没有你细心。He is not as careful as you.

From looking at them, it seems to me that Mandarin uses a phrase (noun+adjective) as one word, for example in the above two sentences:

昨天-热 (hot as yesterday) 你-细心(careful as you)

Am I getting it correct? If yes, can I do the make-up-new-word thing when I speak English in Mandarin too as long as it fits well?

or this is not a good catch at all?

Thank you all in advance.

Answer 1

When use 有 in comparison:

In positive way you can use 今天和昨天一样热(Today is as hot as yesterday) or 今天有昨天那么热 instead of 今天有昨天热.Because it's more normal expression.

In negative way you can use 他没(有)你(那么)细心 which will omit character 有 or 今天没(有)昨天(那么)热.

It's better to add 那么 in comparison to emphasize comparison.

Answer 2

It is better to see the whole picture of comparison than just one case, right?

Let us see how to say: A = B, A > B, and A < B.

今天和昨天一样热。Today is as hot as yesterday. 这个和那个一样+adj。

今天比昨天(还要)热。Today is hotter than yesterday. 这个比那个(还要)+adj。

今天没有昨天热。Today is less hot than yesterday. 这个没有那个+adj。

Except the above, there are many alternatives. Sometimes, you can simply insert 不，没，but many times you can not do so because Chinese do not work as a "LOGIC" robot. For example, Chinese people do not say 今天有昨天热。But then do say: 今天有昨天热吗？I do not know why.

Answer 3

今天和昨天一样热 is better according to my friends.

but the negative '他没有你细心。' is ok.