Here is a hot topic for students who are learning more grammar: compound adjectives. They are important and one of the most useful tools in English. You can build adjectives in so many ways and they are quite important for accurate descriptions of things. You will look like a genius if you can know some compound adjectives, and you will look like a God if you can become efficient at making them.

Some of the basic formulas are as follows:

1) adj / adv + past participle (eg. brightly lit)

2) adj / adv / noun + present participle (eg. never-ending, time-saving)

3) adj + noun + ed (eg. long-legged, black-masked)

Here are some website with info, quizzes, and activities which can help:

Hyphens in Compound Adjectives

ESL Compound Adjective Worksheet

Compound Adjectives

Fun Activity Worksheet

Compound Adjective Matching Quiz with Video

Complete Compound Adjective Guide