The frequency of errors in grammar and punctuation has become a serious concern, the State Examination Commission said in a report after reviewing last year's exam performance by 15-year-olds.
The article regards that it is a grammar phenomenon which is in the mid state and it is a intermediary thing between word and phrase, shows the trend of the transition from phrase to word.
Introduces and analyses some typical but often neglected expressions that show the aspect and state of an action from the Angle of communicative grammar of English.