4.1 Tenses
- simple and continuous tenses of the present, past, present perfect and past perfect
- future tense
4.2 Irregular Verbs
- most common irregular verbs
4.3 Auxiliary Verbs
- can, could, may, might, shall, should, will, would and must
4.4 Conditional
- forming the conditional with the auxiliary verbs would, could, should, ought to and might
4.5 Passive
- passive formation