“I have to put together a presentation for Upper Management.”

You have to give a presentation to several executives at your company. You need some help with creating a nice-looking presentation. You are asking a coworker who's good with design to help you. You say this to explain why a nice presentation is important.

I have to put together a presentation for Upper Management.

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(someone) has to (do something)

When you say that you "have to" do something, it means that you must do it.

I have to work on Saturday.

But "must" is very formal. It's usually used for written instructions or commands, but not in spoken conversation.

put together (something)

When you "put something together", it means that you make something by collecting materials or information from different places. In the example above, you can imagine that the presentation is created using information, notes, photos, and graphics from different sources.

Some other things that people sometimes "put together" include:

  • put together an event
  • put together a portfolio
  • put together a business plan

When you use a short pronoun like "it", "they", "something", etc. it goes between "put" and "together":

We put it together quickly.

We can put something together later this week.

When you use a noun or noun phrase, it goes after "put together".

Upper Management

"Upper management" is the group of people who are at the top of a company. These people usually have job titles like "CEO", "CTO" (Chief Technical Officer), "CFO" (Chief Financial Officer), "Vice President of Sales", and so on.

When you talk about "Upper Management", you use the singular and talk about them as if they are one unified group.