If an action concerns only one person or thing, you mention only the person or thing that carries out the action (the subject) and the action itself (the verb).

grow *(all of these verbs must be intransitive to be unaccusative). Many of these verbs have a transitive counterpart which are transitive verbs, often called causative verbs: Note that the sun is an ...

Perhaps the easiest way to remember the difference, Antonio, is that lay is a transitive verb which needs an object to complete its meaning and lie is an intransitive verb which functions without ...