Hello native English speakers.
1a. If you will eat so much you can't complain if you get fatter and fatter.
1b. If you eat so much you can't complain if you get fatter and fatter.
Which is grammatically correct?
Do they have the same meaning?
2a. If you will wait here a moment I will fetch a chair.
2b. If you wait here a moment I will fetch a chair.
2c. If you have waited here a moment I will have fetched a chair.
Which is grammatically correct?
Do they have the same meaning?