For instance, they can learn that boats float and can practice ways to make boats move across water.
Is it a subject or an object (the bolded word)?
For instance, they can learn that boats float and can practice ways to make boats move across water.
Is it a subject or an object (the bolded word)?
There are multiple clauses in this sentence. Some of the clauses are infinitive and don't have explicit subjects. When a clause doesn't have an explicit subject, you can understand the subject from context.
The structure with "make" is "... make {object} {bare infinitive}" For example "make him do something" or "make me be something". The word "him" or "me" is necessarily in the object form. The bare infinitive is a subordinate clause.
This word also provides the understood subject of the bare infinitive. So "boats" is the object of the verb "make". But we also understand the subject of verb move is "boats".
"Boats" would be the object, whereas "they" would be the subject. It is often difficult when trying to decipher object/subject when the sentence is in reference to others.