sweet things

Hi,

I like sweet things.

What does sweet things mean?

It's hard to be sure without a context, but it probably just refers to candy, cake, ice-cream, things that contain sugar.

(Besides candies, can sb understand sweet things are girls, money...?)

In the right context, you can say this to a girl (I love you, you sweet thing). I wouldn't expect it to refer to money.

Best wishes, Clive

Hi,

you say (I love you, you sweet thing ) as an example,
it is obvious a lack of the verb there.I've met this kind of things in other situations too,Is that correct or just an informal expression?

'Love' is a verb. Why do you say there is a lack of a verb?

Best wishes, Clive

Hi,

but how to explain you sweet thing?

It's a 'structure' in which a noun is used to address a person directly.

Compare Be careful, Tom and Be careful, you idiot. These are both ways to address the person.

It's called the 'vocative' form. 

Best wishes, Clive

No. All of these are examples of nouns - people whom the speaker could be addressing his comments to:

Tom
you idiot
sweetheart
you sweet thing
my beloved
you crazy man
wild thing