Not & 'Inter-'
English Language: KS3, topic 1.2.2
Ways of Saying 'Not"
Prefixes are letters or words placed at the start of words which change their meaning. The prefix 'in-' means 'not'. Let's look at some rules for using the prefix 'in'...

‘In-’
- ‘In-’ means ‘not’.
- For example:
- __In__active - not active.
- __In__correct - not correct.
- __In__sane - not sane.

'Il-'
- But a word starting ‘l’ will become ‘-il’ (instead of –in).
- For example:
- __Il__legal - not legal.
- __Il__legible - not legible or readable.

'Im-'
- If a word starts with ‘m’ or 'p', use '–im' (instead of –in).
- For example:
- __Im__mature - not mature.
- __Im__perfect - not perfect.

'Ir-'
- If a root word starts with ‘r’, use ‘ir’ (instead of – in).
- For example:
- __Ir__regular - not regular.
- __Ir__responsible - not responsible.
'Inter-' Means Between or Among
Prefixes are letters or words placed at the start of words which change their meaning. The prefix 'inter-' means 'between' or 'among'. Let's look at some words beginning with 'inter'...

__Inter__city
- Intercity means travelling between cities.
- For example, an intercity train goes between cities.

__Inter__national
- Something that is international involves more than one nation. So something 'between' or 'among' nations.
- For example, an international sporting competition is between different countries.

Interval
- An interval is a time period between things.
- For example, an interval between acts at the theatre.

Interact
- To interact means to talk among people.
Test yourself on Not & 'Inter-'
If we want to add the prefix 'in' to a word beginning with 'l', what do we change 'in' to?
If we want to add the prefix 'in-' to a word beginning with 'm' or 'p', what do we add instead of 'in'?
Which of these words is the correct version of 'in' + 'regular'?
What does the prefix 'inter-' mean?
If you add inter to the front of national, you get international.
What does international mean?