Carl Bache's book is not simply another monograph on tense and aspect. It is concerned specifically with the treatment of tense within Halliday's systemic functional grammar of English, notably in Halliday's An Introduction to Functional Grammar, henceforth IFG. It offers, amongst other things, a substantial critical appraisal of the IFG account and a proposal for an alternative model, located equally within the theoretical framework of systemic functional grammar, rather than within a more general functionally oriented frame-work.
Gordon Tucker, Cardiff University, Functions of Language