To change the present simple sentence "The students enter the hall without making noise" into past simple, we need to follow certain grammatical rules:
- The present simple tense uses the base form of the verb. In the provided sentence, the verb is "enter."
- To convert this sentence to past simple, the verb "enter" should be changed to its past form "entered."
- The resulting sentence should reflect a completed action in the past.
Applying these steps, the past simple sentence becomes: "The students entered the hall without making noise."
Let's examine the options given:
- The students enters the hall without making noise: Incorrect, as this phrase uses present simple instead of past simple and has a subject-verb agreement error.
- The students have entered the hall without making noise: Incorrect, as this is present perfect tense.
- The students entered the hall without making noise: Correct, as it accurately changes the sentence to past simple tense.
- The students have entered the hall without made noise: Incorrect, due to tense inconsistency and incorrect verb form "made."
In conclusion, the correct past simple sentence is: "The students entered the hall without making noise."