... the uses of the simple present and presentcontinuous Exercises CHAPTER The present perfect and the present perfect continuous Use of the present perfect Formation of the present perfect: Regular ... infinitive Exercises C.HAPTER The past continuous, the past perfect and the past perfect continuous Summary of the uses of the English tenses The past continuous a Use b Formation c Questions ... perfect continuous a Use b Formation c Questions and negative statements Summary of the formation of the Englishpresent and past tenses Emphatic statements Exercises CHAPTER The future tenses...