Answer :
To complete the sentences below with appropriate forms of the infinitive in brackets, we need to understand which form of the infinitive fits best into each context. An infinitive often appears as 'to + verb,' but sometimes the base verb alone is used after certain verbs and expressions. Here's how you can complete each:
I persuaded Tom to join a sports club.
- Here, use 'to join' because 'persuade' is followed by the object + infinitive.
You have been warned not to believe this liar.
- Use 'not to believe' because it's the negative form of the infinitive.
It's important to be understood by your friends.
- 'To be understood' is used as the sentence emphasizes comprehension.
Sheila was told to fetch a taxi.
- Use 'to fetch' because the passive voice often uses 'to + base verb'.
The coach instructed the goalkeeper to be more attentive.
- Use 'to be' because 'instruct' is followed by the object + infinitive.
Ada urged her husband to look for the lost puppy everywhere.
- Here, 'to look for' follows from 'urge,' which takes an object + infinitive.
Bart seems to be sleeping in his room now.
- 'To be sleeping' is used for the present continuous aspect.
Dave knew Agatha to have been traveling all over the world for the last few years.
- Use 'to have been traveling' to imply ongoing action in the past.
Natalie pretends to read.
- Use 'to read' as this verb directly follows 'pretend'.
I want to be invited to Ross's party.
- Use 'to be invited' because 'want' is typically followed by 'to + verb' or 'to + be + past participle'.
- Parents should encourage their children to take independent decisions.
- Use 'to take' as 'encourage' typically follows 'encourage someone to do something'.
- Clare refused to participate in the contest.
- 'To participate' follows 'refuse' to indicate the action not done.
- I thought Oscar to have been staying with his friends in Florida then.
- Use 'to have been staying' to indicate the ongoing nature of 'staying'.
- Lily seems to have gone shopping an hour ago.
- 'To have gone' indicates a completed action prior.
- Nobody helped Eve (to) do the apartment.
- Use '(to) do' because 'help' can be followed by 'to + base verb' or just the 'base verb'.
- Julian believed Neil to have been working overtime that week.
- 'To have been working' suggests ongoing work.
- Ed swore to have seen everything with his own eyes.
- Use 'to have seen' as swore suggests completed action.
- I chose Penny to dress as Snowwhite at the matinee.
- Use 'to dress' as 'choose' is followed by 'object + to + verb'.
- We always forget to close the windows before leaving home.
- Use 'to close' with 'forget' to indicate something supposed to be done but often isn't.
- Viola pretended to have left her homework at home.
- Use 'to have left' because it indicates action as an excuse.
In understanding infinitives, it's crucial to know which verbs require 'to + base form' and which ones need negative forms like 'not to + verb.' This skill helps in effectively constructing sentences as seen above.
