prefer doing 后面一定要加 to doing

这两句话都对,但prefer to 和prefer doing有那么一点点区别
在于:
i prefer doing A to doing B.
这时候的doing 不能改为to do.
也就是当prefer的对象只有一个时,prefer to和doing都可以,但是有两个的时候,一定是prefer doing A to doing B,或者prefer A to B
以上A,B均为名词

是的,具体用法如下：
1、注意介词搭配,如：I prefer swimming to skating.(I like swimming better than skating.)我喜欢游泳胜过滑冰.prefer 因其本身含有比较之意,而不可再与more 或most连用.
2、prefer＋名词或动名词“宁愿”,“更喜欢”.He comes from Shanghai,so he prefers rice.他是上海人,因此更喜欢吃米饭.I prefer going by bike.我宁愿骑单车去.I prefer the white one.我喜欢那个白的.
3、prefer to do “愿意做”.I prefer to go at once.我愿意马上就走.
4、prefer sb.to do “愿意某人做” I prefer you to go at once.我倒希望你马上就走.
5、prefer to sth.“宁愿做...而不做...”.I prefer tea to milk.我宁愿喝茶也不喝牛奶.I prefer watching TV to going out.我宁愿看电视也不出去.

prefer to do与,prefer doing,的区别和like to do与like doing的区别相似.to do表示具体某次喜欢去干.,doing表示习惯上喜欢干.
prefer doing to doing,这里请把两个doing看成并列的名词,就相当于prefer A to B
prefer to do rather than do 这是常考句型,特别是rather than后在此句型中后边跟的是动词原形

都是更喜欢做后面的事情还有一个是prefer doing to doing意志不喜欢前面的更喜欢后面的

prefer to do和prefer doing基本没啥区别,都是宁愿做某事,暗含比较,如：I prefer to read a newspaper=I prefer reading a newspaper.（比起某事,我宁愿读报纸）,但这里,“比起某事”是暗含在意思里的. 而prefer doing to doing 则有明显的比较的痕迹,如,I prefer reading a newspaper to watching TV.比起看电视,我宁愿读报纸.

prefer to do 是直接跟句子的,如i prefer to play the computer.
prefer doing 只两个东西比较.如 i prefer playing computer to drawing pictures.

prefer 作及物动词使用,通常意思是“更喜欢,宁愿”.
1.prefer + 名词/动名词/不定式
例：I prefer some apples./ I prefer having(to have) some apples.我更喜欢吃苹果.
2.prefer somebody to do something 宁愿某人做某事
例：My daddy prefers me not to swim in that river because it's too dangerous.
我爸爸宁愿我不要去那条河里游泳因为那太危险了.
3.prefer A to B 在 A 和 B 中更喜欢 A
例：I prefer green tea to coffee.绿茶和咖啡比较起来我更喜欢绿茶.
I prefer cooking myself to eating out.我宁愿自己做饭也不愿出去吃.
注意:注意这个用法中肯定的是前者,A和B必须在形式上保持一致,即要么都是名词,要么都是动名词.没有使用不定式的用法.
4.prefer to do something rather than ...
这个用法类似于用法3,不过rather than后面可以是不定式、名词、动名词或动词原形.
例：I prefer to stay at home rather than go out in the heavy rain.
我宁愿呆在家里也不想冒这么大的雨出去.
注意:这里 rather than 后面可以用 going out或to go out 都可以.而且 rather than 也可以放在句子开头：Rather than go out in the heavy rain,I prefer to stay at home.
5.宾语从句 prefer that
宾语从句中常用虚拟语气.
例：I prefer that we should gather more information on that issue.
我觉得关于那个事情我们最好收集更多信息.
6.prefer 用法的常用成语及习惯用语
prefer to die rather than surrender 宁死不屈

1.prefre to do sth.rather than do sth.
2.prefer doing
3.那句话就是chinglish.