Khan Academy
Khan Academy: Perfect Verb Aspect
If a verb action is completed in the past, it's in the 'perfect aspect'. Test your knowledge!
Capital Community College Foundation
Guide to Grammar and Writing: Irregular Verbs
An extensive look at verbs in all their various forms and uses. A very valuable and easy to understand resource with many examples.
Grammarly
Grammarly Blog: Verb Forms
This page explains the five forms of verbs: root, third-person singular,present participle, past, and past participle and provides examples of each.
Sophia Learning
Sophia: The Simple Present
This lesson introduces the simple present tense and how it is used. This tutorial lesson shares a short slideshow with the lesson's content.
Towson University
Towson University: Ows: Conditional Tenses Exercise 4
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 7
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 9
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 10
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 11
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 12
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 13
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 14
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 15
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 16
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 17
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 18
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 19
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 20
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Online Writing Lab at Purdue University
Purdue University Owl: Verbs With Helpers
An explanation of how to use helping words with verbs, depending on the conjugation of the verb and the tense.
Towson University
Towson University: Ows: Conditional Tenses Exercise 3
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 5
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 6
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 8
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
Towson University
Towson University: Ows: Conditional Tenses Exercise 1
This is a 10-question, self-grading exercise/quiz on using the correct verb tenses for each sentence. It is suitable for ESL as well as regular English classes.
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