Don't say: We have
Say: We have DIFFERENT opinions.
Don't say: He
Say: He TOLD ME that he would be late.
Don't say: I go to the school in Utebo
Say: I go to the school in Utebo TO LEARN English.
Don't say: I like
Say: I like GOING / TO GO to the cinema on Sundays.
And of course don't forget this and this.
Today I'll be in the school in the afternoon/evening, if you have any last-minute questions.