英语翻译The blackboard moved on,and Mr.Ampere walked after it.顺便问下这个句子能不能改成 The blackboard moved on,and After Mr.Ampere walked.那这个句子中的after算是介词吗？介词和副词的分辨窍门可以告诉下吗

英语翻译He looked ( )at the blackboard but could ( ) see anything I'm()on the blackboard()里填write 还是writing 英语翻译Why,the blackboard was not a blackboard at all,It was the back of a carriage. Look at the blackboard clean the blackboard The blackboard is b_______t 英语翻译Hi,I'm Lily.I'm in Class 1.There are sixteen boys and fourteen girls in my class,Look!This is my classroom.There is a blackboard on the wall.There are eleven numbers on the blackboard.There are fifteen desks in the classroom.On the desk,t 英语翻译The teacher won't ____ ____ a blackboard ____ chalk. please look ----- the blackboard.介词 clean the blackboard的意思 Let me clean the blackboard look at the blackboard,please. what color is the blackboard? 改错:Please look the blackboard. What shape is the blackboard? in还是on the blackboard on the blackboard的汉语 come to the blackboard是什么意思