1.I helped Linda to do her homework.
He helped the old man to go across the road.
She helped me to do the washing.
The polioce helped to find the missing girl.
The dog helped blind man to find the way home.
2.Medicines are helpful to the patient.
Fire is helpful to human beings.
Mechines are helpful to the workers.
A computer is helpful to a white collar(白领)
Planting more trees is friendly to fight against soil erosion(土壤侵蚀)
3.She is friendly to her classmates
The new teacher is friendly to us
The lion is friendly to its trainer
The colleages are friendly to me
The students are friendly to their new friends from American
4.I'm glad to help you.
I'm glad to give you a hand
I'm glad to have you come to my birthday party
I'm glad to stand here
I'm glad to make friends with you