在非謂語動詞的否定式中否定詞置于何處

有這樣一題：

The patient was warned __________ oily food after the operation.

A. to eat not                         B. eating not                         C. not to eat                        D. not eating

此題應選C。主要考查在非謂語動詞的否定式中，否定詞的位置。一般說來，非謂語動詞的否定式只能在非謂詞動詞之前加否定詞; 若非謂語動詞包括幾個詞(如是完成式、被動式等)，則只能在非謂語動詞的第一個詞前加否定詞; so asto，in order to 等結構的否定式，not只能放在不定式符號to之前。如：

1. She pretended _________ me when I passed by.

A. not to see                           B. not seeing

C. to not see                           D. having not seen

2. Tom kept quiet about the accident __________ lose his job.

A. so not as to                        B. so as not to

C. so as to not                        D. not so as to

3. Mrs Smith warned her daughter _________ afterdrinking.

A. never to drive                     B. to never drive

C. never driving                      D. never drive

4. _________ a reply，he decided to write again.

A. Not receiving                      B. Receiving not

C. Not having received             D. Having not received

答案：1. A 2. B 3. A 4. C