1、We have lunch at noon.
We have lunch（ in ）（the）（ middle ）（ of ）（ the）（day ）
2、He is going to school at once.
He is going to school（ right ）（ now ）
3、He goes home for supper at five thiry.
He goes home（ to ）（have ）（supper ）at（thirty ）（ past）five.