Problems abouth sintax

Problem: the students can not do an spelling very well until they had studied it very well, it,s difficult for them to change the sound in their mind and when they already do it they have problemswith the pronunciation of the words because some of them are different than the ones that look the same example:
Tough
Bought
The letter “o” sound different

I chose the topic because: it´s hardfor me to find the way my students find the correct pronunciation because they don´t have a link with the English pronunciation
Spelling words in English is challenging work. As a matter of fact,many native speakers of English have problems with spelling correctly. One of the main reasons for this is that many, many English words are NOT spelled as they are spoken. This difference betweenpronunciation and spelling causes a lot of confusion. The combination "ough" provides an excellent example:
Tough - pronounced - tuf (the 'u' sounding as in 'cup')
Through - pronounced - throo
Dough- pronounced - doe (long 'o')
Bought - pronounced - bawt
Only check how it shows you
This feature provides a guide to the most common problems when spelling words in English.
SwallowedSyllables - Three Syllables Pronounced as Two Syllables
Aspirin - pronounced - asprin
Different - pronounced - diffrent
Every - pronounced - evry
Swallowed Syllables - Four Syllables Pronounced asThree Syllables
Comfortable - pronounced - comftable
Temperature - pronounced - temprature
Vegetable - pronounced - vegtable

Homophones - Words That Sound the Same
two, to, too - pronounced -too
knew, new - pronounced - niew
through, threw - pronounced - throo
not, knot, naught - pronounced - not

Same Sounds - Different Spellings
'Eh' as in 'Let'
let
bread
said
'Ai' as in 'I'I
sigh
buy
either
to study spelling word problems with silent letters (for example: island) and letters combining to make different sounds (gh = f as in 'cough').
The following letters are...