... thiên niên kỷ, + in the morning / afternoon / evening, in February, in 1999, in( the) spring / summer / autumn / winter / in the 1990s, in the 21st century, in the 3rd millennium - Trong số cụm tử ... tương lai + in a few minutes, in an hour, in a day / week / month EX: Daisy has gone away She'll be back in a week - Trong cụm từ in the end với nghĩa cuối ( finally, at last), in time với nghĩa ... time / this( that) time EX: Mr Brown is busy at the moment - Để tạo thành cụm giới từ + at the end / beginning of, at the age of, at frist / last EX: He came to live in London at the age of...