帮忙翻译几个英语短语，谢谢了~

1.prefer doing sth
prefer to do sth
would rather do sth
宁愿做某事不愿做某事would rather do sth than do sth
（主语）宁愿做某事would rather do sth
宁愿做某事也不要做某事would rather do sth than do sth

2.as many as

3. 警告某人某事： warn sb of sth ；n vor etw. warnen ；warn sb about
警告某人做某事： warn sb. to do sth
警告某人不做某事： warn sb not to do sth
4.In theory it is not workable

1,prefer to do sth.
2,as much/many as……
3,warn sb.of ……
eg。They warned him of the danger.
4,The plan should work in theory,but it won't work in practice.

1.would rather do sth
2. as many as....(可数) as much as....（不可数）
3. warn sb
4.in theory it is not feasible

1.prefer to do sth.
2.as much as...
3.warn sb of being careful to do sth
4.it's just fit in theory but not in reality