My English tercher corrected this sentence which I wrote "only when we emphasize on environment more than economy would improve global warming thoroughly ." into ''only when we emphsize the environment more than the economy will global warming improve . " I feel confused because why it should be writen to " will global warming improve " instead of "would improve global warming" ? and why it was corrected to "emphasize the environment" instead of " emphasize on the environment " ?
Thanks to anyone who answer my questions .