"Early man probably used the river as his first means of travel and communications"

(Составить 5 типов во Общий, специальный, к подлежащему, альтернативный, разделительный)

Early man probably used the river as his first means of travel and communications.
To identify and classify the sentence into different types, we need to analyze its structure and function.

1. Общий вопрос (General question):
Did early man probably use the river as his first means of travel and communications?
To create a general question, we simply invert the subject ("early man") and the auxiliary verb ("probably used").

2. Специальный вопрос (Special question):
What did early man probably use as his first means of travel and communications?
To create a special question, we replace the interrogative pronoun ("what") with the target information ("the river") and invert the subject and auxiliary verb.

3. К вопросу о подлежащем (Question about subject):
Who probably used the river as their first means of travel and communications?
To create a question about the subject, we replace the interrogative pronoun ("who") with the subject ("early man") and keep the remaining sentence structure unchanged.

4. Альтернативный вопрос (Alternative question):
Did early man probably use the river or another mode of transportation as their first means of travel and communications?
To create an alternative question, we provide two options for the answer (in this case, "the river" and "another mode of transportation") and use the same inversion structure as in the general question.

5. Разделительный вопрос (Disjunctive question):
Early man probably used the river as his first means of travel and communications, didn't they?
To create a disjunctive question, we use a negative contraction ("didn't") and add the tag question ("didn't they?") at the end of the sentence. The tag question should match the subject of the main clause ("early man").

By using different question types, we can explore various aspects of the sentence and derive meaningful information from it.