You did not give the examples you were asked about, so we cannot answer this question. But we can tell you a little bit about hyphens-- they are used in very specific circumstances. For one, you will see them when spelling out certain compound numbers: twenty-one, forty-three, seventy-nine, etc. You also hyphenate when two related words are used as an adjective, and they describe a single noun: She is a well-known author. John's well-deserved vacation starts today. Hyphens are used with certain prefixes: ex-husband (a former husband, after a divorce); mid-February (the middle of that month); pre-1970s (the era before the 1970s). There are other uses of hyphens too, and I enclose a link to a good site that explains them all.
It was incorrect It is incorrect That is incorrect That was incorrect
incorrect
The event was successfully-planned.
No, not usually, because normally it is grammatically incorrect.
it is to be sure,unfortunate.
Out of these hyphenations, one is incorrect. Mother-in-law, twenty-one, A ten-gallon hat, and Vice-chairperson, are correct. Ten-dollars per hour is the hyphenation that is incorrect.
no, it is not a hyphenation
It was incorrect It is incorrect That is incorrect That was incorrect
tools, language, hyphenation
When you put a preposition at the end of a sentence.For example: 'Where are we going to?'"To" is a preposition and should not be at the end of a sentence. Instead, you should say:'To where are we going?'But everybody just uses the incorrect form.
she was carrying a bag made of canvas
incorrect
yes,it is incorrect to start a sentence with ''and'' as it is a word to combine wo sentences together, not start a sentence
The event was successfully-planned.
This setting automatically insert hyphen's between a mobile number . e.g. With hyphenation a mobile number will appear like 999-999-9999 on your screen. Without hyphenation it will be 9999999999..
That sentence is grammatically correct.
Incorrect ! It supposed to be (the crowd is unhappy )