WORD CLASSES
Words which belong to the same class function in much the same way, so, identifying the word class is really useful in English.
TESTING YOUR ENGLISH: GRAMMAR FOR A1-A2
Now, it's time for you to test your grammar in order to check your strenghts and weaknesses.
FOCUS ON YOUR GRAMMAR AND VOCABULARY
If you need Grammar or Vocabulary practice, here's a web that might help you with lots of great exercises