types of sentences

Skill focus: Identifying double negatives. Which of the following sentences contains a double negative error, making it grammatically incorrect?

• I can't find my keys anywhere.

• She doesn't want no help with her project.

• He has never been to California.

• We are not going to the movies tonight.

Answer explanation

This sentence is incorrect because it uses two negative words, 'doesn't' (does not) and 'no', to express a single negative idea. Correct versions would be 'She doesn't want any help' or 'She wants no help'. The other options are all grammatically correct negative sentences.

Skill focus: Converting double negatives to affirmatives. The sentence 'It is not impossible for our team to win the championship' can be rewritten affirmatively as 'It is _____ for our team to win the championship' without changing its meaning.

• possible

• impossible

• unlikely

• certain

Answer explanation

The phrase 'not impossible' is a double negative that logically means 'possible'. 'Impossible' and 'unlikely' would reverse the original meaning, while 'certain' overstates the meaning, as 'possible' does not guarantee success.

Skill focus: Logical negation of affirmative statements. Given the affirmative statement, 'Everyone on the bus was singing,' choose the most accurate and logical negative version.

• Everyone on the bus was not singing.

• Someone on the bus was not singing.

• No one on the bus was singing.

• Everyone on the bus was whispering.

Answer explanation

The logical opposite of 'everyone did something' is 'at least one person did not do it'. Therefore, 'Someone on the bus was not singing' is the correct logical negation. The option 'No one on the bus was singing' is a much stronger statement and is not the precise logical opposite.

Skill focus: Interpreting the literal meaning of double negatives. Consider the sentence, 'I can't hardly believe you said that!' What is the literal, affirmative meaning of this grammatically flawed sentence?

• I can believe you said that.

• I do not believe you said that.

• I am unsure if I believe you said that.

• I am shocked that you said that.

Answer explanation

The words 'can't' (cannot) and 'hardly' (a negative adverb) create a double negative. In formal grammar, two negatives cancel each other out to make a positive. Therefore, the literal meaning is 'I can believe you said that'. 'I do not believe...' is the intended, but not literal, meaning.

Skill focus: Avoiding double negatives. Complete the sentence to make it a grammatically sound negative statement and avoid a double negative: My brother insisted he didn't need _____ help moving the couch.

• no

• any

• none of

• never

Answer explanation

The sentence already contains the negative 'didn't', so using 'any' correctly completes the negative thought. Using 'no' or 'none of' would create an incorrect double negative ('didn't need no help'). 'Never' does not fit grammatically in this context.

Skill focus: Identifying imperative sentences. From the following list, identify the sentence that is NOT an imperative sentence.

• Please lower your voice in the library.

• What a fantastic goal that was!

• Finish your homework before you play video games.

• Look both ways before crossing the street.

Answer explanation

An imperative sentence gives a command or makes a request. 'What a fantastic goal that was!' is an exclamatory sentence because it expresses strong emotion. The other options are all imperatives: 'Please lower your voice' is a request, while 'Finish your homework' and 'Look both ways' are commands.

Skill focus: Implied subject in imperative sentences. True or False: In the imperative sentence, 'Take out the trash now,' the implied subject is 'you'.

• True

• False

Answer explanation

True. Imperative sentences, which give commands or make requests, have an implied (or understood) subject of 'you', because the command is directed at the person being spoken to.

Skill focus: Forming polite imperative requests. To convert the declarative sentence 'You should turn in your permission slip' into a polite imperative request, you could say: '_____ turn in your permission slip.'

• Please

• You must

• Will you

• Maybe you can

Answer explanation

An imperative sentence gives a command or request, and adding 'please' makes it polite. 'Please turn in your permission slip' is a direct, polite imperative. 'Will you...' forms a question (interrogative), and 'You must...' is a strong declarative statement, not an imperative.

Skill focus: Function of imperative sentences. True or False: The primary function of the sentence 'Be careful on the icy sidewalk!' is to give a warning.

• True

• False

Answer explanation

True. This imperative sentence functions as a warning. Other functions of imperatives include giving a command ('Sit down'), making a request ('Please pass the salt'), or offering advice ('Try to get more sleep').

Skill focus: Forming interrogatives with auxiliary inversion. To form a grammatically correct interrogative sentence from the words concert / you / go / to / the, you should begin the sentence with '_____'.

• Did

• You

• To the

• Go

Answer explanation

Correct interrogative structure for a past action often requires the auxiliary verb 'did' before the subject ('you'). The correct sentence is 'Did you go to the concert?'. Starting with 'You' would form a declarative sentence, and starting with 'To the' or 'Go' would be grammatically incorrect for a standard question.