Only if, Only by, Because (to emphasize)

Regardless of, No matter, Whether or not

There is no choice but to…, Can't be helped; it's inevitable, There is no alternative but to do something

There is nothing better than..., It is best to..., It would be best to...

To sum up, In summary, In short

not until after (doing), unless after completing (something), cannot, it is only after doing ~ that ... is possible

It's not that …, Kind of, Might

unless you do X, Y cannot happen, without doing X, there is no possibility of Y, if not for X, then Y won't occur

unable to help doing something, cannot resist doing something, cannot contain oneself from doing

must, have to, should

Please do!, Order someone to do something, Beg to do something (imperative)

among, out of, from the group

While, As ...; during the time that, Even while doing ...

Even while ~ing, Even though ~ing, Despite ~ing

on the occasion of, at the time of

When, At the time of, In case of

when, on the occasion of, at the time

Lead to, As a good opportunity to, As a result of

in the process of doing, to be in the middle of doing, gradually doing

At the time of ~; just as ~, When ~; while ~; timing around ~, Unexpected event or action occurring at that moment