I don't get transitive verbs.

In the sentence "Some reach a height of 120 feet," I was told it was transitive. But why? I'm unsure what the direct object is.

2 answers

The word "transitive" comes from the Latin word meaning to "carry across." A transitive verb carries an action across from the subject to the direct object.

In this sentence, "reach" is a transitive verb because it has something that answers "what?" after it. What did some reach? "height." Therefore, "height" is the direct object.

A simpler way of understanding this is that an intransitive verb does not have a direct object.

This site may help you understand transitive verbs.
http://www.chompchomp.com/terms/transitiveverb.htm