我不知道你是想要什么层次的翻译水准,不过看句子好像是运用学过的词来练习的翻译句子,下面是比较简单易懂的翻译.
3 .Sometimes she goes roller skating-sliding,but she is not good at it.
4.I usually drink a glass of milk and eat two slices of bread for my breakfast.
5.My mother rarely eats chicken but often eats fruits.