This is “Correct Verbs”, section 1.7 (from appendix 1) from the book Writers' Handbook (v. 1.0). For details on it (including licensing), click here.
For more information on the source of this book, or why it is available for free, please see the project's home page. You can browse or download additional books there. To download a .zip file containing this book to use offline, simply click here.
People who are new to English often experience confusion about which verb forms can serve as the verb in a sentence. An English sentence must include at least one verb or verb phrase and a tense that relays the time during which the action is taking place. Verbals (such as gerunds and infinitives) should not be confused with verbs.
Correct example: Roger enjoys driving the RV.
Incorrect example: Roger driving the RV.
Correct example: Kyle decided to write a long message.
Incorrect example: Kyle to write a long message.
Past tense correct example: Yesterday, I called you at 5:00 p.m.
Past tense incorrect example: Yesterday, I call you at 5:00 p.m.
Future tense correct example: The next time it rains, I will bring my umbrella.
Future tense incorrect example: The next time it rains, I bring my umbrella.
Present tense correct example: Come in and get warm.
Present tense incorrect example: Come in and got warm.
See Chapter 15 "Sentence Building", Section 15.2 "Choosing Appropriate Verb Tenses" for a more extensive overview of verb tenses.