找出下面句子中的主语、系动词及表语，并指出主语和表语分别是由什么词性或词类来充当的。 1 Tom is a student. 2 He is fat. 3 They were kind. 4 She is in the room. 5 The weather gets hot in summer. 6 She looks beautiful. 7 The flower smells good. 8 The soup tastes delicious. 9 The chair is yours. 10 The children are asleep. 11 The leaf turns green. 12 The weather still remained cold in April. 13 My work is to look after the baby. 14M y job is teaching English 15 She is at home 16 I feel terrible 17 He is older than he looks 18 The flowers smell sweet and nice 19 You have grown taller than before 20 He becomes a teacher .他当了教师。