,请看试题：,Jenny, you should practice as often as you can _____ the piano competition.,A. fail B. to fail C. win D. to win,【易错选项】选C,
,【易错原因】误认为此处有can后面就用动词百思特网原形。也有一部分人认为没有practice to do sth.这个说法。这样说其实很武断。请看下面的论述。,
,【正确答案】D,
,【试题解析】此处应用动词不定式结构作目的状语，又根据 practice as often as可知 to win符合题意。as often as you can为“as...as...”结构。,practice doing sth.和practice to do sth.的区别：,1. practice doing sth. 意思是练习做某事。（后面多跟名词(词组)或v-ing形式作宾语。）,I want to practice my spoken English in the English Corner this weekend.这个周末我想去英语角练习口语。,Listen!Someone is practicing playing the piano.听！有人在练习弹钢琴。,I need to practise my Italian before my business trip.,我出差之前需要先练习一下意大利语。,You must practice speaking English.,你必须要练习说英语。,2. 没有practice to do sth.这个说法。这样说其实很武断。小编通过大量查阅资料和思考，其实practice不可以接to do sth表示练习或训练的内容本身的动作词语，如果要接表示练习或训练的动作的词就换成动名词；,To improve hand-eye co-ordination, pract百思特网ise throwing and catching balls.要想提高手眼协调能力，就练习投球和接球。（练习的内容本身就是throwing and catching balls）,但是 ，如果要说：练习或训练以达到什么目的，是可以接不定式的，如本试题就是一个好例证。Jenny, you should practice as often as you can to win,the piano competition.,Jenny,你应该尽可能多地练习以赢得钢琴比赛。（to win,the piano competition百思特网并不是练习的内容本身，而是目的，所以是可以用不定式的）,3.practice在英式英语是名词，动词是practise；在美式英语中是动词，如果用作动词的话，后接动词要用动名词形式，就是doing的形式。,【例句】1.I want you to practice doing this until it becomes second nature.我希望你坚持练习做此事，直到它成为二天性习惯为止。,