Difference between transitive and intransitive sentence
1) Is the sentence below transitive or intransitive?
Suburban train services on Central Railway were disrupted after derailment.
A) If intransitive as per my knowledge it should be like.
Suburban train services on Central Railway disrupted after derailment. (Omit were)
B) And if it is transitive then there should be agent and sentence like this:
Suburban train services on Central Railway were disrupted after derailment because of broken track by agitators (Agent).
Please explain how to identify transitive and intransitive sentence from below. 2) Three people were killed. 3) Trees were broken. 4) Water level was increased. 5) Money was transferred.