Содержание:
1. Construction there is / are.
2. The Present Continuous Tense.
3. The Past Continuous Tense.
4. The Future Continuous Tense.
5. The Present Perfect Tense.
6. The Past Perfect Tense.
7. The Future Perfect Tense.
8. Prepositions.
9. The Infinitive.
10. The Participle.