While watching captain America in English, I heard Chris Evans saying " If that's what it takes " What exactly does the sentence mean ?
I haven't seen the movie so I don't know the context. But in general, "that's what it takes" means that these are the things required to complete this job or reach this goal.
A very literal example would be, "What does it take to replace spark plugs in my car?" To which someone might reply, "You need a set of socket wrenches, a spark plug puller, and of course the new spark plugs."
The phrase is often used for less concrete requirements. Like, "John really has what it takes to be a champion athlete", meaning, he has physical strength, a willingness to practice long and hard, etc.
This is a straight use of the verb "take", though it is one of those verbs with dozens of meanings, so you have to go through quite a bit to find!
Looking at Merriam Webster for example, they have:
- to adopt, choose, or avail oneself of for use: such as
e. (3) : need, require
// takes a size nine shoe
// it takes two to start a fight
In the film, the dialog goes:
Peggy Carter: What do you plan to do? Walk to Austria?
Steve Rogers: If that's what it takes.
when he says "If that's what it takes" in response to her question, he means (in this context):
If that is what is required [in order to get to Austria]