Can prepositions and prepositional phrases be subjects

It can't be the subject, but it can be at the beginning of the sentence
e.g:In the ocean lies a little island.

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1. If you come across a prepositional phrase like as with in the future, is there any way to judge whether it is followed by a sentence or a noun?
2. The phrase "Verb + preposition" is followed by ()（ The phrase "Verb + preposition" is () followed by ()
3. Actually,work and study are complementary to each other rather than in conflict. I want to ask what I think of in conflict after "rather than" What's so awkward about a prepositional phrase after "rather than"?
4. English prepositional phrases What's the difference between in form and on form?
5. What are the prepositional phrases in English junior high school?
6. What are the common prepositions in English (including common prepositional phrases)
7. Common verbs with prepositions or adverbs can form more phrases Common verbs with prepositions or adverbs can form more phrases, help to list some, the more complete the better eg. bring+out/about/up/forward/in/down/off/around/along...etc. Like bring, which verbs can be followed by many prepositions or adverbs to form a phrase?
8. Is the word after the verb in the verb phrase a preposition or an adverb
9. Help me sum up some phrases like "Verb + preposition" and "Verb + Adverb" Ask for some common cloze tests, such as come, get, make, break, set
10. About the position of verb + preposition, verb + adverb phrase and pronoun! I hope you can come here gently and leave a trace When verb + preposition, put it after it? When verb + adverb, put it in the middle? Put it on, in this case, on is an adverb, but isn't on usually a preposition? How to judge this? Is it the same with other similar words? Another example is get off it, when off is a preposition, how to judge
11. As is a conjunction followed by a sentence or a phrase? Like is a preposition followed by what?
12. Be + Adjective + prepositional phrase this structure, what is the composition of the intermediate phrase? Is he enter the room, his head dropped. The same as he enter the room with his head dropped?
13. On the phrases of "be + Adjective + preposition" Duoduo Duoduo
14. The construction of adjective phrase and preposition phrase Please sum up the formula according to the word order Noun phrase Construction: determiner + Adjective + noun (head word) + six post attributives
15. consistent with the data in the first pie chart,the entire body of the world's water sources is predominantly made up of fresh water with only a small quantity of salt water making up the remainer. What does the adjective plus preposition phrase consider with the data in the first pie chart do? Can you tell us what the grammatical phenomenon is?
16. Please give an example of the structure of be verb + adj Adjective + preposition, the more the better!
17. Which leading words can be followed by prepositions
18. What words can't be followed by prepositions
19. What can be followed by like as a preposition
20. English translation Note (situation in brackets) 1. Don't look (see something horrible) 2. It stinks (smells bad) 3. Noisy (listening to loud music)