Apostrophes summarised

For missing letters like 

it's  (it is), we're (we are), you're (you are), let's  (let us)

For possession, with nouns

Tom's friend, the boy's mother (mother of the boy), the boys' mother (mother of the boys), babies' clothing (clothing for babies), women's rugby (rugby for women)

I hesitate even to mention the following misuses, but here goes.

The apostrophe is NOT for making a noun plural, as is often seen on shop signs.

xxxxx orange's - 4 for £1 xxxxx wrong!

xxxxx CD's xxxxx wrong!

The apostrophe is NOT for possession with adjectives

xxxxx you're brother xxxxx wrong!

The apostrophe is NOT for verbs

xxxxx he play's the guitar xxxxx wrong!

Test yourself:

Put in apostrophes if and where necessary.

1. Todays bargains on Roberts stall - potatoes, carrots, sprouts.
2. Lets watch "Von Ryans Express.
3. We viewed the engineers proposals for transport links.
4. The Suns ultraviolet emissions vary over its regular 11-year cycle.
5. Scotlands role in the economy and how it affects the Scots.

Answers: paste the upside down answers into FLIP

 to save standing on your head!

˙sʇoɔs ǝɥʇ sʇɔǝɟɟɐ ʇı ʍoɥ puɐ ʎɯouoɔǝ ǝɥʇ uı ǝloɹ s,puɐlʇoɔs ˙5  
˙ǝlɔʎɔ ɹɐǝʎ-11 ɹɐlnƃǝɹ sʇı ɹǝʌo ʎɹɐʌ suoıssıɯǝ ʇǝloıʌɐɹʇln s,uns ǝɥʇ ˙4  
(ɹǝǝuıƃuǝ ǝuo uɐɥʇ ǝɹoɯ ɟı ,sɹǝǝuıƃuǝ ǝq oslɐ plnoɔ) ˙sʞuıl ʇɹodsuɐɹʇ ɹoɟ slɐsodoɹd s,ɹǝǝuıƃuǝ ǝɥʇ pǝʍǝıʌ ǝʍ ˙3  
˙ssǝɹdxǝ s,uɐʎɹ uoʌ" ɥɔʇɐʍ s,ʇǝl ˙2  
˙sʇnoɹds 'sʇoɹɹɐɔ 'sǝoʇɐʇod - llɐʇs s,ʇɹǝqoɹ uo suıɐƃɹɐq s,ʎɐpoʇ ˙1