句子的成分 (一). 指出下列句中主语的中心词 The teacher with two of his students is walking into the classroom. There is an old man coming here. The useful dictionary was given by my mother last year. To do todays homework without the teachers help is very difficult.(二) 选出句中谓语的中心词 I dont like the picture on the wall.A. dont B. like C. picture D. wall The days get longer and longer when summer comes.A. getB. longerC. days D. summer Do you usually go to