always,usually,often一定唔轉時態??

Position of Adverbs:-
With the special finites certain mid-position adverbs, chiefly the "adverbs of frequency" (always,usually,often ) have a different position from the position they have with other verbs
Mid-position adverbs are the adverbs of frequency:-such as always,usually, often,
When a special finite is used with the verb,the adverb comes between the special finite and the main verb,eg:-
My work (is) always carefully done.
Cunning Zero (was) never a very good questioner.
You (should) never send 5 points again!
They (are) just leaving the response blank.
5 points (can) hardly work!

2012-10-30 22:37:21 補充：
Pendulum Zero (can) hardly see.

before the performance, I always see...........(for now)

before the performance, I always saw...........(for the past)
both are correct.

before the performance, I always see......