Could be vs Maybe she'll learn something

When to use each in English, with meaning, register, and examples.

Could be

Top 2,000 (common)

Maybe she'll learn something

Top 1,000 (very common)
Most common: Maybe she'll learn something
 Could beMaybe she'll learn something
Pronunciation🇬🇧 //kʊd biː//🇺🇸 //kʊd bi//🇬🇧 //ˈmeɪbi//🇺🇸 //ˈmeɪbi//
MeaningMight happen or be true.It’s possible she will understand or get knowledge.
ExampleIt could be raining later, so take an umbrella.Maybe she'll learn something new in class today.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 1,000 (very common)
Collocationscould be true, could be helpful, could be dangerous, could be possiblelearn something new, maybe later, maybe next time
Common mistakesUsing 'could be' with certainty instead of possibility., Confusing it with 'should be' which indicates obligation., Ommiting 'could' when expressing hypothetical situations.Confusing 'maybe' with 'may be'; 'maybe' is one word, 'may be' is a verb phrase., Using 'maybe' in formal essays; it's often too informal., Overusing 'maybe' instead of being more decisive.
Usage notesUse 'could be' for possibilities, especially in spoken English. Avoid in very formal writing.Use 'maybe' when uncertain about something. Common in spoken English, but also appropriate in writing.

See it in real clips

Could be
Maybe she'll learn something

Frequently asked questions: Could be vs Maybe she'll learn something

What's the difference between Could be and Maybe she'll learn something?

Could be: Might happen or be true. Maybe she'll learn something: It’s possible she will understand or get knowledge.

Which is more common: Could be and Maybe she'll learn something?

Maybe she'll learn something is the most common in everyday English.

Can you show an example of each?

Could be: It could be raining later, so take an umbrella. Maybe she'll learn something: Maybe she'll learn something new in class today.

Can I use Could be and Maybe she'll learn something interchangeably?

Not always. Could be and Maybe she'll learn something are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

Related comparisons