What do you mean if you can give more details someone might be able to help you more.
Major earthquakes are considered unusual but major tremors happen frequently . Major is a word that is an adjective.
It means a girl is built in a aesthetically pleasing way <span />
The sentence is not grammatically correct, it should be, "Last summer, Jim mowed one lawn, now he mows three." Mowed just one lawn doesn't make sense in one sentence.