选Aobserve observe及物动词,作“留心到;注意到;观察”解时,其用法与see, hear等相似,可用于以下句型: ① 跟带有不带to 的不定式的复合结构,但在被动结构中,不定式必须带to。如: The woman was observed to follow him closely. 有人看到那女子紧跟着他。 ② 跟带有现在分词的复合结构,指扰表示“注意到的动袭逗漏作”正在进行。如: The police observed him entering the bank with a shotgun. 警察看到他带着猎枪进了银行。 ③ 跟从句。如: He observed how the work was done. 他看到那工作是怎样进行的。【拓展延伸】 observe还有“拍烂遵守;奉行(法律;习俗)”、“评论;评述;讲”之意。如: Do they observe Christmas Day in that country? 那个国家的人过圣诞节吗? He observed that it would probably rain. 他说很可 不定式带tomake sb do sth,但是被动sb is made to do,要加to