influence his schoolwork= have an influence on his schoolwork
be absent from
fail examinations
fail to do sth
find life there difficult
重点句子
You can never imagine how difficult the road to success is. Many times I thought about giving up, but I fought on.
It has been three years since we last saw our primary school classmates.
= Three years has passed since we last saw our primary school classmates.
= It is Three years since we last saw our primary school classmates.