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（以下各例中，a）表示錯誤的或不宜提倡的句子，b）表示正確的或值得模仿的句子。）
4．表示相同的意思，是否用了平行語法結構
a) With the computer, one can do shopping, banking and read at home.
b) With the computer, one can do shopping, banking and reading at home.
can do shopping, banking and read at home, 用語法平行結構來衡量，用動詞原形 read是不妥的，為了和 do shopping, do banking 保持結構上平行，接下來的一個內容要用do reading。
a) Nowadays, people not only eat enough food, but also eat better.
b) Nowadays, people not only eat more, but also eat better.
用 not only...but also…, both...and…, whether...or…, either...or…, as well as, along with等能連接兩個成分的連詞，前后兩個成分在結構上要保持一致。用 eat enough food和eat better，不如用 eat more和eat better，都用副詞。
a) Participating in sports is good for our physical health, and through it we can also train our character.
b) Participating in sports is good for our physical health, and it is also beneficial to our character-training.
在說同樣的事時，相鄰的句子盡可能在語法結構上保持一致。
5．用代詞時，指代是否清楚
a) Sometimes teachers will inform students of the heavy burden they have to bear.
b) Sometimes a teacher will inform students of the heavy burden he has to bear.
they 即可指代teachers, 也可指代 students，明顯的是指代不清。其實只要把其中一個名詞變成單數，用he和 they分別代不同的名詞，就清楚了。因為 a teacher也可泛指所有教師。
a) Someone believes that the teacher's task is to give students knowledge, which may not be true.
b) Someone believes that the teacher's task is to give students knowledge, a notion which may not be true.
which指代什么不清楚，指 knowledge，還是指前面整個句子？如果指 Someone believes，最好用 a notion或an idea歸納一下整個句子的意思，然后引出從句。
a) People have been fighting against the influence of TV commercials, but it often proves useless.
b) People have been fighting against the influence of TV commercials, but the effort often proves useless.
it 指什么？如指influence，則在 it often proves useless 這個句子中顯然不通。寫作人知道it指人們的努力，但effort 這個詞前面沒有出現(xiàn)過，就不能用it。
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