The present perfect with 'for' and 'since' Comparatives and superlatives The present perfect with ‘just’, ‘already’ and ‘yet’ Defining relative clauses ‘May’, ‘might’ and ‘could' Subject questions Too ...
Whether teaching or learning the present perfect, it is often useful to present the two verb aspects in a contrastive way. Compare the following: 'Dick Francis has been writing novels since 1957. In ...
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