单个的目前分词有时可以用于名词前作定语，但有时也不可以，这有哪些规律吗？
譬如可以说 the crying child, thesleeping child等，
但能否说 the eating child, theplaying child, the looking child, the sitting child, the standing child 等？
目前分词作前置定语，为简单的定语从句省略，目前分词与修饰语之间，为逻辑上的主谓即可。如：
the coming week → the week that will come
the following questions→ the questions that follow
running water → water that is running
a developing country→ a country that is developing
the suffering people → people who are suffering
a missing child→ a child who is missing
a sleeping baby → a baby who is sleeping.
a barking dog→ a dog that is barking
flying birds → birds that are flying
smiling faces →faces that are smiling
a floating boat → a boat that is floating
falling leaves → leaves that are falling
boiling water → water that is boiling
the setting sun → the sun that is setting
the rising sun → the sun that is rising
与你这里给出的：
the eating child→ the child that is eating
the playing child→ the child that is playing
the looking child → the child that is looking
the sitting child → the child that is sitting
均符合语法，你是从哪儿得知这类是不符合语法的呢？我想看一下作为参考。
