As long as you need it to be! There is no magic formula for telling how long your sentences should be.
Write a correct English sentence with a subject and a predicate, give it correct grammar, spelling, and punctuation, and that is how long it is supposed to be!
Can hear and saw are the verbs, but "saw" should be "see".
sentence of summarize
Yes, "How long have you been living in Oxford?" is a good sentence.
support the topic sentence
Yes it should !! :-)
A topic sentence should be at least 6-10 words.
On your long journey we pray that no disaster should befall you.
You should put a comma after "instrument" to separate the two independent clauses in the sentence: "My favorite instrument, the trumpet, has a long history."
There should be no 'and' in there. The sentence should go like this: The man is a scientist with a keen sense of observation who dedicates long hours in the lab.
The possessive form of the noun sentence is sentence's.Example: You can edit the sentence's length.The pronoun that that takes the place of the noun sentence is it.The possessive form (a possessive adjective) is its.Example: The sentence is too long. You can edit its length.
The sentence should have a comma after "inventions" to separate the two independent clauses. It should read: "You can be proud of all the American inventions that have been produced throughout the 1800s, the list is long and very impressive."
No, the sentence is not grammatically correct. It should be: "It had been a long time since I had written to you."
The sentence should be,"You should have written."
Why not. From Venice to Paris is a long way to walk, so I took the train.
All a sentence has to have to make it a sentence is a subject and a verb. For example, "She ran." would be a complete sentence. 'She' is the subject and 'ran' is the verb. But a sentence can be as long as the writer wants it to be. The longest sentence I've personally ever seen was about 3/4 of a page long. There's no limit to how long a sentence can be, really, as long as it's a well-written sentence.
no you should not unless it is at the begging of the sentence!
An complex sentence, but not all complex sentence are "super long".