In Present progressive^x, Modals^x, Simple past^x

Pemmican wrote:As far as I know, there are these 13 tenses: a) Past Perfect Progressive ........................had been + present participle b) Past Perfect ..........................................had + past participle c) Past Progressive ...................................was/were + present...

Technically, there are two tenses: Present (or Non-Past) and Past. There are four aspects derived from two aspect pairs (simple vs. perfect and simple vs. progressive): Simple, Perfect, Progressive, and Perfect Progressive Combining these gives eight tense-aspect combinations, sometimes...

As far as I know, there are these 13 tenses: a) Past Perfect Progressive ........................had been + present participle b) Past Perfect ..........................................had + past participle c) Past Progressive ...................................was/were + present participle d)...