Active and passive sentences: how to convert an active sentence into its passive form and then backward
We should start our grammar with next terms: The Subject is the noun which the Verb belongs to;
The Agent is the maker of an action. When we talk about the Subject of a sentence, what object do we usually make as the Subject? How to convert an active sentence into its passive form:
1. Use the Object of the active sentence as the Subject;
2. Put the helping verb be into the tense which the Subject (= the Agent) of the active sentence does an action in + add the Past Participle;
3. Turn the Subject...