Infinitives of Purpose in English

The video tutorial by Dan from BBC Learning English covers the use of infinitives of purpose in English. It explains how infinitives are used to express the reason for an action, both for oneself and on behalf of others. The tutorial also discusses formal expressions like 'in order to' and 'so as to', and how to use negatives with these expressions. Additionally, it covers the use of infinitives after nouns, pronouns, and indefinite pronouns, providing examples and clarifying common mistakes.

What is the primary purpose of using an infinitive of purpose in English?

• To describe the location of an action

• To explain the reason for an action

• To indicate the time of an action

• To show the frequency of an action

Which of the following sentences correctly uses an infinitive of purpose?

• He studies hard to pass the exam.

• I am going to the gym for exercise.

• She went to the store for buying milk.

• They are here for to help us.

How can you express doing something on behalf of someone else?

• Using 'to + infinitive'

• Using 'for + somebody'

• Using 'with + noun'

• Using 'by + gerund'

Which sentence correctly uses 'for + somebody'?

• He cooked dinner for his family to enjoy.

• They left early for to avoid traffic.

• I bought a gift for to make her happy.

• She went to the store for buying groceries.

What is a more formal way to express purpose using infinitives?

• Using 'to + infinitive'

• Using 'in order to' or 'so as to'

• Using 'for + gerund'

• Using 'by + infinitive'

Which of the following sentences uses 'in order to' correctly?

• He studies hard in order to pass the exam.

• I am going to the gym in order to exercise.

• She went to the store in order to buying milk.

• They are here in order to help us.

How can you make 'in order to' negative?

• By adding 'not' before 'in order to'

• By adding 'not' after 'in order to'

• By using 'in order not to'

• By using 'not in order to'

Which sentence correctly uses 'so as not to'?

• I went to bed early so as not to sleep.

• They arrived on time so as not to be late.

• She stayed late so as not to finish the work.

• He left early so as not to miss the train.

What is the correct way to express a negative purpose without using 'not' directly with 'to + infinitive'?

• Using 'to + infinitive' with 'never'

• Using 'to + infinitive' with 'no'

• Using 'to avoid + gerund'

• Using 'to + infinitive' with 'not'

Which sentence correctly avoids using 'not' with 'to + infinitive'?

• I went to bed to not watch TV.

• I went to bed to avoid watching TV.

• I went to bed not to watch TV.

• I went to bed for not watching TV.