By Past perfect, Vocabulary

.It is not a common verb tense and aspect. It is seldom used, and I strongly advise you not to waste time teaching it, but to go on to something more valuable, like additional vocabulary.

"Grammar and exercises are only requirements of the syllabus, not of learning a language. Did you learn the grammar of your mother-tongue when you were acquiring it? Most of you may still not know the grammar of your mother-tongue but you speak it effortlessly." If grammar means identifying...

The language of media is a bit different, both in vocabulary and grammar, than the normal writing. One of the differences is the tense, as you've mentioned. If the time of the event, state,... is past, the tense of the sentence is present; if it is past perfect, then the sentence is past; and you...