a) the subjunctive: to be in past tense + verb in present
b) sequence of tenses and reported speech
c) the derivation of nouns from pa’al-, pi’el- and hif’il-verbs
d) the imperative – eg go!

If you know the regularities, you can form nouns from Hebrew verbs.

formation of nouns from pa'al -verbsnoun
to supportתומך(the) supportתמיכה
tomechtmichah
to drinkשותה(the) drinkשתיה
shotehshtiah
to absorbקולטabsorptionקליטה
koletklitah
to knowיודעknowledgeידיעה
yode'anewsyediah
to tendנוטהtendencyנטיה
notehnetiyah
to call, readקוראthe call, readingקריאה
korehkriah
to buildבונהconstructionבניה
bonehbniah
formation of nouns from pi'el -verbsnoun
to speakמדברspeechדיבור
medaberdibur
to arrange, tidyמסדרarrangement, סידור
mesadersidur (prayer book)sidur
to make a matchמשדךmatchmakingשידוך
meshadechyidd. shidduchshiduch
to brokerמתווךbrokerageתיווך
metavechtivuch
to serve asמשמש(the) useשימוש
meshameshshimush
to sanctifiyמקדשsanctificationקידוש
mekadesh(kiddush-prayer)kidush
to relateמספרstoryסיפור
mesapersipur
to teachמלמדstudyלימוד
melamedlimud
formation of nouns from hif’il -verbsnoun
to inviteמזמיןinvitationהזמנה
mazminhazmanah
to knowמכירacknoledgement, conscienceהכרה
makirhakarah
to prepareמכיןpreparationהכנה
mechinhachanah
to spendמוציאexpenseהוצאה
motzihotza’ah
to appearמופיעappearanceהופעה
mofia hofa’ah
to notifyמודיעnotificationהודעה
modiahoda’ah
to call for helpמזעיק(the) alarmהזעקה
maz’ikhaz'aka
to feelמרגישfeelingהרגשה
margishhargashah