可加,如recently
完成时时间状语分两类.
1.迄今为止已发生,(不是具体时间) 如 just recently
2.发生了一段时间 可用 for since 且 since 后可跟时间短语,如since last week 还可跟从句 如since i arrived to Bj. 但for 后只能跟 短语 如for two years.
可加,如recently
完成时时间状语分两类.
1.迄今为止已发生,(不是具体时间) 如 just recently
2.发生了一段时间 可用 for since 且 since 后可跟时间短语,如since last week 还可跟从句 如since i arrived to Bj. 但for 后只能跟 短语 如for two years.