1.I will get up early tomorrow.（改为否定句）
-> I won't get up early tomorrow.

2.They will meet at the gate of school.(对at the gate of school提问）
-> Where will they meet?
3.Maybe my mother will take me to school.(改为同义句)
-> Perhaps my mother will take me to school.
或: My mother may take me to school.
4.I will join the English competition.(改为一般疑问句,并做肯定回答）
-> 一般疑问句: Will you join the English competition?
肯定回答: Yes, I will.