There are two main classes of verbs in English: strong and weak. 'Strong' is a historical terms that refers to the of verbs in which the past tense is marked by a change in the base vowel and the ...

Improve your understanding of phrasal verbs in English. Explanations and practice of approximately 1,000 phrasal verbs, written for advanced-level (C1 to C2) learners of English. Perfect for both self ...