1.observe v.观察;观测;遵守;庆祝 __________ n.观察,监视;言论 归纳拓展 observe sb.do/doing sth.观察某人做过/正在做某事 under observation被观察,被监视 he has been making an exact observation of the phenomenon.他一直在严密观察这一现象。 活学活用 (1)he has been observed ____________ at cards. 他被发现打牌时作弊。 (2)they________ the train until it disappeared in the distance.(2010•宣城月考) a.saw b.watched c.noticed d.observed 2.likely