always 总是, usually 常常, often通常, sometimes有时；every day/evening/Monday；twice a day一天两次, once a year 一年一次，every other ten minutes 每隔十分钟，now and then 不时，from time to time 不时
一般过去时
the other day 前几天, yesterday；last week / month / year / night/Monday/May；three years ago； just now （a moment ago）刚刚； in the past 在过去, in （已过去的）某年 / 月 ；on （已过去的）某天,at （已过去的）几点钟,once upon a time （long long ago）从前；
一般将来时
副词： tomorrow 短语： next Sunday / week / month / year how soon in + 时间段 / (将来的) 某年 / 月 after + 时间点 on (将来的) 某天 in the future
现在进行时
now现在；Look看.... Listen听....
过去进行时
at this / that time yesterday; at 10:00 last night; from 7:00 to 8:00 yesterday morning; when / while 从句
现在完成时
副词： already yet just ever before never recently
短语： how long for + 一段时间 these five years by far so far
since +时间点 how many times in these / those days 次数
过去完成时
by the end of last…; before / after 从句； by yesterday / last Monday 宾语从句
