Are the following sentences the same or not?
We can use both tenses for the future (we are talking about the future activity) with no change in meaning.
However, sometimes there is a difference:
As soon as I have eaten, I will help you with that.
As soon as I eat, my stomach starts grumbling.
The first sentence refers to once the eating is done, but the second sentence refers to when the eating starts. (note that simple future is never used here.)
I'm starting a job in sales after I finish college.Yes they are.
I'm starting a job in sales after I've finished college.
However, sometimes there is a difference:
- When I see the report, I'll make some notes. (I'll do both at the same time.)
- When I've seen the report, I'll make some notes. (I'll see it and then make notes.)
Present perfect conveys a sense of the end of the action, whereas present simple conveys a sense of the beginning or middle. For example,
As soon as I have eaten, I will help you with that.
As soon as I eat, my stomach starts grumbling.
The first sentence refers to once the eating is done, but the second sentence refers to when the eating starts. (note that simple future is never used here.)
