The phrasal verb "come in" is predominantly used in informal speech, acting as a versatile expression with several meanings depending on context. Primarily, it is employed to indicate entry into a place or system, for example, "Come in, the door's open." It can also be used in a more abstract sense, such as indicating participation or involvement, as in "that's where I come in." Furthermore, "come in" might be used to describe the state of something being received or becoming available, often in contexts like broadcasts or discussions of items ordered or signals—as in "The order just came in" or "Does the radio come in clearly?" Given its versatility, "come in" is commonly used across a variety of settings, from casual everyday interactions to more structured environments, such as radio communications or technical domains, though with an appropriately adjusted tone for formality.
A2
Elementary
1. To enter a place.
Please wipe your shoes before you come in.
The dog started barking when the stranger came in.
2. To become involved in a situation or activity.
She came in on the project to offer her expertise.
He decided to come in on the discussion about climate change.
3. To receive or be available as a piece of information, news, or similar.
Reports are just coming in about the election results.