典型易錯題歸類分析

下面這道題是考查非謂語動詞、狀語從句還是祈使句？

_______ your composition carefully, some spelling mistakes can be avoided.

A. Having checked                        B. Check          

C. If you check                            D. To check

【陷阱】幾個干擾項均有可能誤選，尤其可能誤選A(from www.dubaipaintplumbers.com)。

【分析】最佳答案選 C。前面一個分句為條件狀語從句，后面一個分句為主語�，F分析幾個干擾項：選項 A 和 D 均為非謂語動詞，根據英語語法習慣，非謂語動詞作狀語時，其邏輯主語應與句子主語一致，而此句的 some spelling mistakes 顯然不能用作 having checked 或 to check 的邏輯主語，故不能選為答案；若選 B，則兩個句子之間缺少必要的連詞，也不對。請做類似試題(答案均選 C)：

(1) ________ more careful, the work might have been done better.

A. Being                                      B. Having been

C. If you had been                        D. To have been

(2) _______ your diet, it is easy to reduce.

A. Watching                                B. To be watching

C. If you watch                           D. To have watched

(3) _______ a pair of compasses, it is easy to describe a circle.

A. Having                                   B. To have had

C. If you have                             D. if having

(4) _______ for something, a receipt is given to you.

A. Paying                                    B. Having paid

C. When you have paid                 D. To be paying

(5) _______ the sun rising slowly in the east, the scene is a perfect dream.

A. Seeing                                    B. To be seeing

C. When you see                         D. Having seen