1. because we discussed the topic of the test in great detail. cf
2. choosing fresh fruit as a snack is a good idea. s
3. that she was the only one who came made a huge difference in our plans. s
4. until Miguel stops caring about the work he is doing. cf
5. since the president has traveled to many south American countries. cf
A sentence consists of one or more clauses, it has a subject and a predicate, and when we read it, we can understand its meaning. On the other hand, a clause is a component of the sentence, and sometimes they can not stand on their own as the sentence always does.
Let's see each group of words:
- "because we discussed the topic of the test in great detail." can not stand on its own; information is missing. Besides, this group of words starts with the subordinating conjunction "because," which means that there should be a main clause that can support this group of words for them to make sense. In conclusion, this is a clause fragment.
- "choosing fresh fruit as a snack is a good idea" in this case, the group of words can stand on its own. There is no need for extra information to comprehend the meaning of this group of words, so it is a sentence.
- "that she was the only one who came made a huge difference in our plans." There are two clauses, "that she was the only one who came" and "made a huge difference in our plans." In the first one, the word "that" is a demonstrative pronoun that refers to a situation. Besides, it makes the clause a dependent clause that acts as the subject of the sentence. As the two clauses add the necessary information to comprehend the meaning, it is a sentence.
- "until Miguel stops caring about the work he is doing," this group of words can not stand on its own; there is information missing to comprehend its meaning. Besides, the group of words starts with the subordinating conjunction "until," which indicates that we need another clause that can subordinate to this clause and give the rest of the information that we need to comprehend what it is saying. That is why it is a clause fragment.
- "Since the president has traveled to many South American countries." As well as in the previous sentence, there is information missing. This group of words can not stand on its own, and it also starts with a subordinating conjunction (since), so it is a clause fragment.
To sum up, to distinguish a sentence from a clause, see if it makes sense or more information is needed. You can also check the grammatical part and look for subordinating conjunctions, verbs, predicates, and subjects.
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