◎ 在下列主語(yǔ)部分有do的結(jié)構(gòu)后,作表語(yǔ)的不定式可省去to:
The most important thing we should do now is (to)remain cool-headed. 我們現(xiàn)在最應(yīng)該保持冷靜。
The first thing he did was (to)look for a guide. 他做的第一件事是找一個(gè)向?qū)А?
The thing to do now is clear the snow from the road. 現(xiàn)在要做的就是清除路上的積雪。