Questions & Answers about השיעור מתחיל בחמש וחצי ונגמר בשבע ורבע.
The prefix ה־ is the Hebrew definite article, equivalent to the in English.
So:
- שיעור = lesson / class
- השיעור = the lesson / the class
In this sentence, the speaker is talking about a specific lesson, not just any lesson.
Because they agree with the subject השיעור, and שיעור is a masculine singular noun.
So Hebrew makes the verbs match the noun:
- השיעור מתחיל = the lesson starts
- השיעור נגמר = the lesson ends / is over
If the subject were a feminine noun, the verb forms would change accordingly.
The prefix ב־ here means at.
So:
- בחמש = at five
- בשבע = at seven
Hebrew usually uses ב־ when giving a clock time. It is attached directly to the word, so it is written as one unit.