(為故意拖延而作的)藉口, 托辭Now I'm not having any ifs and buts -- it's cold showers for everyone before breakfast tomorrow. 好了, 不要跟我討價還價--明天早飯前大家都要用冷水淋浴。I don't want any ifs and buts -- do it at once. 別給我這樣那樣的藉口--馬上動手幹吧!
(用於if 現在時態或現在完成時態之後)要不; 不然I'll go if you're going -- if not I'd rather stay at home. 你去我就去, 否則我寧可待在家裡。If you've finished we can have a coffee -- if not, you'd better keep working. 你要是完事了, 咱們可以喝杯咖啡--不然的話, 你最好接著幹下去。