Q: if you take this medicine, what happens?

Are the following answer all correct?

  1. You will get sick.
  2. You get sick.
  3. You can get sick.
  4. You would get sick.
  1. If you take this medicine, you will get sick

This is correct. If you take this medicine right now, sometime in the future you will definitely get sick.

  1. If you take this medicine, you get sick.

This just about works as a general statement: if, at any time, you were to take this medicine, then at some time later you would get sick. A better example of a general statement would be

If you take drugs, you get sick.


  1. If you take this medicine, you can get sick.

The possible meanings of can are ability, permission, request, possibility and offer: none of these really work possibility sounds like it might work, but the meaning is closer to ability than to probability. Could would work, as it can be used to express possibility, especially slight or uncertain possibility

  1. If you take this medicine, you would get sick.

If you use would with if, it implies a hypothetical situation so you have to put the verb in the past:

If you took this medicine, you would get sick.


If you take this medicine.

goes with

You will get sick. (in the future, after taking the medicine)
You get sick. (will is left out but implied)
You can get sick. (hypothetical future situation)

Your other answer

You would get sick.

goes with

If you took this medicine.

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