1. look at 后加名词前是不是必须加the? 2.look like变单三在look后加...答:1. look at 后面的名词必须加the,为了引起注意,起强调的作用,如 Look at the blackboard, please. 请看黑板.2. look like变成单三后是在look后加s, 因为look是动词,这里的like是介词,像...的意思 3. look like后面一般接名词, look后面接,adj,即形容词,作表语,如 She looks like a bird....