TOEFL iBT Spelling 1:

Here are some general guidelines for American English spelling!

(1) Words ending in -tre in British English end in -ter in American English.

Examples:

UK - Let's go to the city centre.

US - Let's go to the city center.

(2) Words that end in -ise in British English end in -ize in American English.

Examples:

UK - You must prioritise your goals in order to succeed.

US - You must prioritize your goals in order to succeed.

(3) Words ending in -our in British English end in -or in American English.

Examples:

UK - I am on good terms with my neighbour.

US - I am on good terms with my neighbor.

(4) Words that end in -ogue in British English end in -og in American English.

Examples:

UK - That story has an intersting dialogue.

US - That story has an intersting dialog.

(5) In British English the final "l" is doubled in continuous verb forms. The final "l" is not doubled in American English.

Examples:

UK - He is travelling in Australia right now.

US - He is traveling in Australia right now.

For free exercises on American spelling, please click on the link below.