请看下面这道题，是考查祈使句还是考查非谓语动词？

　　_______ the road round to the right and you’ll find his house.

　　A. Follow                            B. Following

　　C. To follow                        D. Followed

　　【分析】正确答案选A。根据句中的连词and 可推知它是一个并列句。假若将此题改为下面这样，则答案为B：

　　_______ the road round to the right, you’ll find his house.

　　A. Follow                            B. Following

　　C. To follow                        D. Followed

　　但是，若改成下面一题这样，则答案为C(不定式短语表目的)：

　　_______ the road round to the right, the blind man asked a boy to guide him.

　　A. Follow                            B. Following

　　C. To follow                        D. Followed

　　请做以下试题，答案均选A，都是因为句中的并列连词 and（填空句为祈使句）：

　　(1) _______ to the top of the hill, and you can see the whole of the town.

　　A. Get                                B. To get

　　C. Getting                           D. Having got

　　(2) ______ the milk and set a good example to the other children.

　　A. Drink                             B. To drink

　　C. Drinking                        D. Having drinking

　　(3) ______ me, and then try to copy what I do.

　　A. Watch                           B. Watching

　　C. To watch                       D. Have watching

　　(4) _____ through this book and tell me what you think of it.

　　A. Look                             B. Looking

　　C. To look                         D. Having looked

　　(5) _____ it with me and I’ll see what I can do.

　　A. Leave                             B. Leaving

　　C. If you leave                    D. When left

　　有时不用连词连接句子，而用破折号，情况也是一样(答案均选A)。如：

　　(6) _____ down the radio — the baby’s asleep in the next room.

　　A. Turn                             B. Turning

　　C. to turn                          D. To have turned

　　(7) _____ some of this juice — perhaps you will like it.

　　A. Try                              B. Trying

　　C. To try                          D. To have tried

　　以下各题也应选A，是因为句中的从属连词 when, before, until 等（填空句为祈使句）：

　　(8) ______ him enough time to get home before you telephone.

　　A. Give                             B. To give

　　C. Giving                          D. Given

　　(9) ______ left when you get to the end of the street.

　　A. Keep                            B. Keeping

　　C. To keep                       D. Kept

　　(10) ______ your hand over your mouth when you cough.

　　A. Put                              B. Putting

　　C. To put                         D. To be putting