The military training program began the first day the students arrived. 学生们到的第一天就开始了军训。 His wife was sent to the operating room the moment we reached the hospital. 我们一到医院他的妻子就被送进了手术室。 time后接定语从句时，引导词that或at/in which可以省略： e.g. The first time (thatat/in which)I saw him was last year. 我头回见到他是去年。 形近短语 for the first time“第一次” e.g. A language selection menu will be displayed when you turn on the computer for the first time after purchase 购买后第一次打开电脑时会出现语言选择菜单。The military training program began the first day the students arrived. 学生们到的第一天就开始了军训。 His wife was sent to the operating room the moment we reached the hospital. 我们一到医院他的妻子就被送进了手术室。 time后接定语从句时，引导词that或at/in which可以省略： e.g. The first time (that或at/in which) I saw him was last year. 我头回见到他是去年。 for the first time “第一次” e.g. A language selection menu will be displayed when you turn on the computer for the first time after purchase. 购买后第一次打开电脑时会出现语言选择菜单。 形近短语