Like he should vs Supposed to

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

Like he should

InformalBeyond 10,000 (less common)

Supposed to

Top 2,000 (common)
Most formal: Supposed toMost common: Supposed to
 Like he shouldSupposed to
Pronunciation🇬🇧 //laɪk hi ʃəd//🇺🇸 //laɪk hi ʃʊd//🇬🇧 //səˈpəʊzd tə//🇺🇸 //səˈpoʊzd tə//
MeaningUsed to say that someone is supposed to do something.expected to do something
ExampleHe always forgets his homework, like he should just remember it!He is supposed to finish the report by Friday.
RegisterInformalNeutral
How commonBeyond 10,000 (less common)Top 2,000 (common)
Collocationslike he should have, like he ought to, like he needs to, like he is expected tobe supposed to, supposed to be, supposed to do
Common mistakesConfused with 'like he would' - 'should' implies obligation, 'would' implies willingness., Used in overly formal contexts - it's best used informally., Misused as a serious statement - it’s more of a casual tone.Confusing with 'suppose to' which is incorrect., Using the past tense incorrectly, e.g., 'was supposed' requires context., Mixing up obligations and permissions; 'supposed to' implies obligation.
Usage notesUsed in casual conversations to imply that an action is expected or appropriate for someone. It may not be suitable for formal writing.Use 'supposed to' to express expectations. It can imply obligation or a plan. More formal contexts might prefer 'expected to'.

Frequently asked questions: Like he should vs Supposed to

What's the difference between Like he should and Supposed to?

Like he should: Used to say that someone is supposed to do something. Supposed to: expected to do something

Which is more formal: Like he should and Supposed to?

Supposed to is the most formal of these.

Which is more common: Like he should and Supposed to?

Supposed to is the most common in everyday English.

Can you show an example of each?

Like he should: He always forgets his homework, like he should just remember it! Supposed to: He is supposed to finish the report by Friday.

Can I use Like he should and Supposed to interchangeably?

Not always. Like he should and Supposed to 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.