Today is the first day of spring!

The seasons of the year are spring, summer, fall and winter.

Spring and summer are my favorite seasons! And what about you?

A palavra fall é mais usada no inglês americano e autumn, no inglês britânico.

Exemplos:

Spring starts on September 23rd in the southern hemisphere.

People say that winter clothes are much more elegant.

I usually spend summer vacations at the beach. 

I prefer summer weather to winter weather.

Today is still a typical winter day. 

Quando quisermos dizer “na primavera”, “no verão”, “no outono” e “no inverno”, a preposição in deve vir antes da estação do ano.

in spring ou in the spring

in summer ou in the summer 

in fall ou in the fall / in autumn ou in the autumn

in winter ou in the winter

Exemplos:

I usually go to the beach in the summer.

This park looks really different in the fall (autumn).

In winter, we like to wear scarfs.

E também dizemos:

next summer/last summer, next winter/last winter, next fall/last fall, next spring/last spring

Mas cuidado! We do not use “in” before “last” and “next”!

Exemplos:

We went to the beach last summer.

Next summer will be really hot.

They are getting married next spring.

Based on http://blog.influx.com.br/aprenda-as-esta%C3%A7%C3%B5es-do-ano-em-ingles