在夏天 in summer/ in the summertime
在16岁时 at the age of 16/ when he/she was 16/ who's 16 years old
天气糟糕 He was late because of the bad weather/ owing to the bad weather/ owing to the unfavorable weather.
How nice the dish tastes!
用2种方式说“在夏天”的英文 用3种方式说“在16岁时”的英文