After theBecause of global warming of the last few years, spring and fall have become very insignificant, there is not much difference between spring and fall. Because of global warming, there is not much difference between spring and fall.

Often it's a few days ago that you are wearing a sweater, and after that you can wear short sleeves and summer is hereYou can be wearing a sweater one day and short sleeves the next. You can be wearing a sweater one day and short sleeves the next.

Last summer, it rarely rained, t. This year, it rains almost every afternoon. Last summer, it rarely rained. This year, it rains almost every afternoon.

Can be two separate sentences

In winter, it hardly ever snows in winter, so it's pretty boring. In winter, it hardly ever snows so it's pretty boring.