单句改错每句一处错。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号，并在其下面写出该加的词。
删除：把多余的词用斜线划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
①Do you aware that your son is having difficulties at school? ____
②A chair made of steel is stronger than the one made of wood. ____
③I have two sisters, both of them are doctors. ____
④He always thinks it unlikely for his son to be made fun at school. ____
⑤Aismony had an amazing mind which he searched for explanations of everything in the past and the present. ____
⑥Mr. Herpin is one of the foreign experts who is working in China. ____
⑦You'd better set down some time for exercise every day to keep fit. ____
⑧Considered his age, the little boy reads quite well. ____
⑨My grandpa seems to heard of the anecdote about the famous scientist. ____
⑩ I have bought the same dress which she is wearing. ____
