After adjective ending in -ed like amazed, disgusted what preposition I have to put after? For example: I am bored OF/BY the maths test/my friend Luca. Are there any rules for this construction?
There are no rules. Learn each expression in examples to help you remember the preposition. (bored with/by, interested in, etc.)
There is an explanation, however, for adjectives ending in -ed and -ing, as mentioned in the title of the post. An adjective ending in -ing describes what the noun is, so the lecture is boring,interesting, etc. An adjective ending in -ed is how you feel, so you feel bored with/by the lecture, or you're interested in the lecture, etc., but there are, of course, other suffixes for adjectives, such as -able, -ible,-ful, -ic, -ive, -less, and -ous, that may describe what something is, or how you feel. Examples help to learn these adjectives, and there are exceptions to almost every rule.
As said, no rules. It's just vocabulary.
Common prepositions are about, with & of. Some examples include:
- confused/guilty/depressed/relieved/angry about.
- pleased/fed up/satisfied/irritated/bored with.
- jealous/proud/afraid/ashamed/scared of.
The problem is that the preposition is fixed, so if you try to use another one, it won't work, specially when doing a test.