1. slate:a dark gray rock that can easily be split into flat thin pieces.

He is thirteen years old.but he don’t have money to go to school.He carries the slate to the building everyday.His salary in only three hundred Yuan a month.

2. slant:to slope or make something slope in a particular direction.

Here is a tree about one hundred years old.but now it slant towards the house.It’s very dangerous.They decide to cut it.

3. slack:hanging loosely,or not pulled tight.

My Korea teacher think he is fat so he buys the trousers with size XL online.When he received the trousers and worn that was too slack.

4. slob:someone who is lazy and untidy

He is a slob man that doesn’t to work.I saw him drank the beer beside the rubbish bin,I wonder why he has a money to buy beer.

5. slum:a house or an area of a city that is in very bad condition,where very poor people live.

There is a slum area.They have many children is every family.They don’t have enough time to study.They help their parent do many housework or take care their family.