Loanwords are an important feature of English. They do not, however, affect the structure of the language. An English speaker may use the word ballet but he will not say a dancer of ballet‚ as you would in French.
A few imported terms retain their original syntax. The United Nations has a secretary general while the chief officer of the English legal system is the attorney general. But these are rare exceptions.
Worksheets on the use of loanwords in English are included in the English FAQ Teaching Pack Use coupon code CQDWKF0 to download English FAQ Teaching Pack for only £1.99