There is something grammatically wrong in this sentence. When the structure “only+adverbial” appears at the beginning of a sentence, the sentence should be in inverted sequence. In this sentence, the word “only” is at the beginning and is followed by an adverbial clause; therefore, the subject clause should be inverted. However, in the sentence listed above, the subject of the main clause is missed. Hence, the correct sentence should be “Only when I had saved enough money to visit Florida and contact with them did I discover just how critical the situation had become”.

There is something wrong with the phrase collocation in this sentence. When we use the word “provide” to mean offering somebody something, we can say “provide somebody with something” or “provide something for somebody”. In this sentence, it means that television provides us with a wide range of programs. When the collocation occurs as an object behind a preposition, the internal structure of the collocation cannot be changed. Therefore, the correct sentence should be “Television plays an educational role in our daily life by providing us with a wide range of programs: from learning a foreign language to doing some repair work; from doing some research to dealing with housework”.