When I get a great deal of land (4)
I believe the answer is:
asia
'a great deal of land' is the definition.
(I've seen this before)
'when i get' is the wordplay.
'when' becomes 'as' (eg 'when I walked' means 'as I walked').
'get' becomes 'a' (I can't justify this - if you can you should give a lot more credence to this answer).
'as'+'i'+'a'='ASIA'
Can you help me to learn more?
(Other definitions for asia that I've seen before include "Large continent" , "Eastern continent" , "The nations of the East, collectively" , "A is A (anag)" , "Continent bordering three oceans" .)