the relation that formerly existed between the words chair and another chair is lost. The teacher must not forget the rules for the position of the preposition. The preposition must always precede its object and no other word can come between it and the word or words it controls.
Here are some examples of sentences in the above exercises from which the preposition has been taken away by the teacher:
Go from your seat the cabinet.
Place a chair the door.
Lay the counter the box.
Place the prism the cylinder.
The china saucer is made china.
To give the child an idea of the normal position of prepositions a series of permutations may be made leaving the preposition and its object in their normal positions. In this case some meaning is still left to the sentence:
Stretch a string from the door to the window.
From the door to the window stretch a string.
Stretch from the door a string to the window.
From the door to the window a string stretch.
From the door stretch to the window a string.
But the child will recognize that the right sentence is the simplest and the clearest:
Stretch a string from the door to the window.
On the other hand if we separate the preposition from its object or invert their normal position, the meaning is entirely lost:
Stretch a string the door from the window to.
Stretch a string from the door window to the.
String from the stretch door to the a window.