Present, past, and future tense correct usage
medium
1 of 5 Lessons
Rules of subject-verb agreement in complex sentences
medium
2 of 5 Lessons
Conditionals: If-clauses and sequence of tenses
medium
3 of 5 Lessons
Identifying the correct tense for reported events
medium
4 of 5 Lessons
Common errors in auxiliary and linking verbs
medium
5 of 5 Lessons