Phrasal Verbs: Formal vs Informal Register Exercises

One of the most distinctive features of English phrasal verbs is that they are typically informal. For almost every common phrasal verb, there is a more formal single-word equivalent. For example, put off is the informal version of postpone, find out corresponds to discover, and carry out is the informal equivalent of conduct. Understanding when to use each version is called register awareness and is a crucial skill for upper-intermediate and advanced learners who want to write and speak appropriately in different situations.

The general rule is straightforward: use phrasal verbs in everyday conversation, informal emails, and casual writing. Use formal single-word verbs in academic essays, business reports, and official correspondence. For example, in a text to a friend you might write: "Can we put off our meeting?" In a formal email to a client, you would write: "Could we postpone our meeting?" However, some phrasal verbs like carry out and set up are actually used in formal contexts too — they have become standard in business and academic English. Cambridge B2 First and C1 Advanced exams often ask you to transform sentences between formal and informal register, so learning these pairs is excellent exam preparation.