Test on Modal Verbs, Noun Phrases, and Participles

Question 1: Question forms that directly begin with a modal verb of probability, such as 'Might she be…?', are the usual way to ask about possibilities.

A. Yes

B. No

Explanation: Question forms with modal verbs of probability (Might she be …?) are unusual. We usually use 'Do you think…?' instead.

Question 2: Which of the following sentences correctly uses a perfect infinitive to express probability in the past, based on the provided study materials?

A. She might be joking about it.

B. He must have caught a later train.

C. They can't have been trying very hard.

D. Do you think he might be Portuguese?

Explanation: The perfect infinitive is formed with have + past participle and expresses degrees of probability in the past. 'He must have caught a later train.' is a direct example of this. 'They can't have been trying very hard.' uses the continuous infinitive (have + been + -ing) which is also a form that expresses probability in the past, as mentioned in the section 'The continuous infinitive is formed with have + been + -ing. She must have been joking. They can't have been trying very hard.' 'She might be joking about it.' uses a present continuous infinitive, not a perfect infinitive for past probability. 'Do you think he might be Portuguese?' asks about present probability using 'Do you think' with a modal verb, not past probability with a perfect infinitive.

Question 3: A noun phrase is always composed solely of a single noun.

A. Yes

B. No

Explanation: A noun phrase is a group of words including a noun, as shown in the examples 'a book' and 'my book', which contain more than just a single noun.

Question 4: A continuous infinitive following a modal verb, such as in 'They must be joking', is considered a noun phrase.

A. Yes

B. No

Explanation: The study materials define a noun phrase as 'a group of words including a noun', providing examples like 'a book' and 'my book'. The examples of continuous infinitives following modal verbs, such as 'must be joking', do not fit this definition.

Question 5: Based on the study materials, which statement accurately defines a noun phrase?

A. It is exclusively a single noun.

B. It is a group of words that must contain a noun.

C. It is a group of words that describes an action.

D. It is a word that modifies a verb.

Explanation: The study materials define a noun phrase as 'a group of words including a noun'. Therefore, option 1, 'It is a group of words that must contain a noun', is the correct definition.