217205PhmNguynLanAnh

english grammar probability grammar verbs necessity possibility modality modal verbs copular verbs parts of speech linguistics english language present perfect present continuous present simple verb tenses reported speech conditional sentences hypothetical scenarios intentions future tense social actions creative actions cognitive actions: communication actions physical actions: participles infinitives intransitive verbs transitive verbs tense action communication language intracellular transport transport pathways separation processes mass transfer principles unit operations transport phenomena chemical engineering mass transfer operation