Practices： 判断下列句子是主谓结构还是主谓宾结构， 如果是主谓宾结构请指出是由什么充 当的宾语（名词、代词、动词不定式、doing 等等）
1 He arrived yesterday. 2 The boy is crying loudly. 3 She died in 2000. 4 The man disappeared in the stre
et. 5 I like music. 6 She wanted some help. 7 I slept well last night. 8 Tom built a house last year. 9 I bought a computer in the street yesterday. 10 Tom often swims in the river. 11 .The ship moves slowly. 12 .He wanted two boxes watches. 13 .I read every book in the school library. 14 .You can understand me. 15 .We can watch TV. 16 .The children are reading carefully. 17 .Mr. Smith speaks very fast. 18 .The train has arrived. 19 .They won’t come today. 20 .You mustn’t talk loud.