对应词是summer，例如：
1、I haven't seen him since the summer before last.我已有两个夏天没见过他了。
2、Each summer a new batch of students tries to find work.每年夏天都有一批新的学生要找工作。
3、What time does it get dark in summer?夏天什么时候天黑
winter的对应词是summer
例句如下，请仔细体会和理解
1、
It tends to get very cold here in the winter.
这里冬天往往会很冷。
2、
At last winter came to an end.
冬天终于结束了。
3、
They worked on the building all through the winter.
他们整个冬天都在建这座大楼。
