一個(gè)好的句子中，每個(gè)等立成分都要以相同的形式出現(xiàn)。這種句法加強(qiáng)了文字的功力，使文章產(chǎn)生更大的效益。

如果同一句中應(yīng)該等立的成分不對應(yīng)，不但效益不好，而且也是一種句法上的缺陷。

下面兩則廣告中的第二個(gè)動(dòng)詞形態(tài)就和前面的不對應(yīng)，因此屬于一種字形上的錯(cuò)誤：

① If you intend to buy or sell your property or having any queries, please feel free to call me .

② You will be in charge of interviewing and shortlisting candidates and to assist in the recruitment of 500 staff.

在第一句里的“having”應(yīng)改為“have”才對。不然，就要把這個(gè)分句完全寫出來：

“…… or if you have any queries, ……”

第二句里的“and”是銜接前面的動(dòng)名詞“interviewing and shortlisting”和后面的動(dòng)名詞“assisting”。顯然，這里不用動(dòng)名詞而用不定式動(dòng)詞“to assist”，也是犯了動(dòng)詞形式不對應(yīng)的錯(cuò)誤，非改正不可。

還有，根據(jù)字詞的排列，“shortlisting”要排在“ interviewing”前面，才合邏輯。

①和②這類的錯(cuò)誤相當(dāng)普遍。雖然這樣的錯(cuò)誤不會(huì)影響人們對文章的理解，但是總不是件文字上的好事，還是多多注意，盡量避免好。

同樣的，下列 5 個(gè)從學(xué)生作業(yè)中找出來的句子，也犯了同樣的毛病：

③ This will enable the parent to experience the new style of life and allows him or her enough time to consider settling down.

④ Utopianism violates the human conscience, denies privacy to individuals and discard human rights.

⑤ They have to reach a decision on either sending their child to a day-care centre or employ a maid.

⑥ It is very hard to relate the stories through other means and at the same time retains the critical aspects of the book.

⑦ This problem can be solved by developing correct language skills, concentrating on studies day by day, and try not to exert too much pressure.

③到⑦句子里的動(dòng)詞形態(tài)的錯(cuò)誤是明顯的，改正也是容易的，即：

③ allow; ④ discards; ⑤ employing; ⑥ retain; ⑦ trying.