英语阅读(节选自"The teacher"in Little Ironies）理解：How would you desc

英语阅读(节选自"The teacher"in Little Ironies）理解：How would you describe the teacher?
The teacher held the offending page in front of his colleague,and with his forefinger traced the lines that had given most pain.“Now look at this:‘I would like is become a nurse and successful career so I have a lot of money with luxuries’ – by the way,I had got them to write on the topic,“My ambition” – ‘so I can buy a house for my mother and brothers and sisters’ – this is the only sentence in the whole composition that is correct grammatically.Listen to this one,can you make anything of it?‘and my favourite ambition I must strive very hard and make hard afford for if I have no ambition to help my mother and brothers and sisters they is sure to suffer for my father he don’t care at all everytime come back from selling cakes only he must drink and spend all money on drinks and sometimes he beats my mother.’ - it’s that Tan Geok Peng from Secondary Four C,you know that timid,mousy-looking girls who looks ready to faint in fright the moment you call her to answer a question.You know,I’m getting very worried about the standard of English in my class.I guess I shall have to get Tan Geok Peng and the likes of her in for extra Saturday coaching,otherwise they’ll never make it in the exams.Three months away,I tell them.Just three months in which to polish up their grammar and vocabulary and punctuation,and write the first decent composition in their lives!”
The extra coaching did not save the poor teacher from the despair he was continually experiencing.“Ah!” he said,shaking his head sadly,“what shall I do?Read this muck!Let me see – yes,it’s from that girl,Tan Geon Peng again – that girl will be the death of me,I tell you.I keep explaining things and going over and over the same things with her,but she insists on giving me such nonsense.Listen to this!She was supposed to write a story with the title,“The Stranger” and all she did was write a great deal of trash about her father – ‘He canned me’,even when I did not do wrong things still he canned me’ – she means ‘caned’ of course – ‘and he beat my mother and even if she sick,he wallop her.’ This composition is not only grossly ungrammatical but out of point.I had no alternative but to give her a ‘fail’ straightway.God,I wish I could help her!”
When the news reached the school,the teacher was very upset and said,“Poor girl.What?She actually jumped from the eleventh floor?Such a shy,timid girl.If only she had told me her problems.But she was always too shy and timid to speak up.”

impatient
lack of responsibility
mean