PREP sc2 109 begin to do 与begin doing

lc837981213

109.
   (30145-!-item-!-188;#058&004686)

Unlike psychiatrists, who are trained as medical doctors, psychologists have historically been forbidden from prescribing their patients drugs, but in 2002 New Mexico began to grant the privilege of prescribing to licensed, doctoral level psychologists who complete an additional training and certification program.

(A) psychologists have historically been forbidden from prescribing their patients drugs, but in 2002 New Mexico began to grant the privilege of prescribing

(B) psychologists have historically been forbidden to prescribe drugs for their patients, but in 2002 New Mexico began granting prescribing privileges

(C) psychologists have historically been forbidden to prescribe their patients drugs, but in 2002 in New Mexico, the privilege to prescribe began to be granted

(D) historically psychologists have been forbidden from prescribing their patients drugs, but in 2002 New Mexico began to grant the privilege of prescribing 答案：B

(E) historically psychologists have been forbidden from prescribing drugs for their patients, but in 2002 in New Mexico, they began granting prescribing privileges

对于B项还有不懂的就是begin to do 与begin doing。begin to do不是指一件事以前没做过现在开始做，而begin doing不是指一件事以前做了一段又停下了，现在又开始接着做吗？这里New Mexico 显然是第一次做，应当用begin to do啊。如果不是这样，请讲解一下这两者的区别。

[此贴子已经被作者于2009/8/6 20:55:23编辑过]

lc837981213

顶

lc837981213

保持顶，直到有人解决。

aeoluseros

再添加几个例子：

prep108.According to a new report by the surgeon general, women with less than a high school education were three times as likely to begin smoking as women who went to college.

prep207(GWD-24-34) The study of the fruit fly, a household nuisance but a time-honored experimental subject, has enabled scientists to begin to unravel the secrets of how embryos develop.

大全60.
   After a few weeks' experience, apprentice jewelers can usually begin to discriminate, though not with absolute certainty, between genuine diamonds and imitation diamonds.

umm..究其出现过的题目而言，还是符合以下几点的：

一般来说，begin to do和begin doing可以互换

1) 谈及一项长期活动或开始一种习惯时，使用doing. 

How old were you when you first started playing the piano?
你几岁时开始弹钢琴？ 

 2) begin, start用进行时时，为避免重复后接to do：I was beginning to get angry。
我开始生起气来。 

 3) 在attempt, intend, begin, start 后接know, understand, realize这类（心理）动词时，常用不定式to do。
I begin to understand the truth。
我开始明白真相。 

 4) 物作主语时
It began to melt.

[此贴子已经被作者于2009/8/6 23:54:40编辑过]

lc837981213

谢谢斑竹的指点，我了解了。这道题里的begin to do 和begin doing是可以互换的。

sihappy

哦~多谢了~

啊喂我是蚊子

感谢分享！