The Future Perfect Tense- Examples and Exercises
www.gingersoftware.com › content › grammar-rulesThe future perfect progressive tense is used to talk about an action that will already have started and will still be happening by a certain time in the future. We use time expressions such as for 30 minutes and since early morning to describe the length of time the activity has already going on. To form a sentence in the future perfect progressive use will + have + been verbing (present participle) form of the verb.
After, Before, When | Grammar Quizzes
https://www.grammar-quizzes.com/8-5.htmlIt is not clear whether while, when, before, after, and since are adverbs or conjunctions. "A time clause begins with such words as when, before after, as soon as, until, and while and includes a subjects and a verb. The time clause can come either at the beginning of the sentence or in the second part of the sentence…".