英語四級作文常用關(guān)系詞：時間關(guān)系

at once;

immediately;

at length;

in the mean time;

meanwhile;

at the same time;

in the end; then; soon;

not long after;

later; at once;

at last; finally;

some time ago;

at present;

all of a sudden;

from this time on;

from time to time;

since then; when;

whenever;

next point;

a few minutes later;

formerly;

as; once;

since;

occasionally;

in a moment;

shortly;

whereupon;

previously