Your daughter is trying to tell you something, but she seems nervous. She's hesitating, but you're in a hurry. You tell her:
Come on, spit it out.
annoyed, children (talking to), hurried, idioms, kids 
Your daughter is crying because she doesn't like what you cooked for dinner. She wants pizza instead. You're angry that she's not satisfied with the meal you cooked. You say:
You're acting like a spoiled brat!
angry, children (talking to), kids, personality 
Your kids found a homeless cat. They want to keep it. You're not going to let them keep it because you already have enough pets. You tell them:
We can't take in every stray that comes along.
children (talking to), pet, phrasal verb 
You're about to drive somewhere with your kids. You want to make sure they have their seatbelts on before you go anywhere. You ask them:
All buckled up?.
car, children (talking to), complete 
You're babysitting someone's young child. The child puts his finger in his nose. You want to scold him and tell him not to do that. You say:
Ew! Don't pick your nose! That's gross!
You got your daughter a pet rabbit. When you got it for her, you made her promise that she would take care of it. Now you've noticed that the rabbit's cage is dirty and its food is all gone. You say to her:
You promised me that you would be responsible for him.
children (talking to), clauses, pet, promise 
You are going on a road trip with your family. The trip takes several hours, so after an hour your kids start to get really impatient. One of your children asks:
Are we there yet?
You're babysitting a young child and took her out to a park. You're pushing her on a swingset. You want it to seem exciting, so you say:
Whee!
children (talking to), exciting, kids, onomatopoeia, park, play, playground, 日本語サポート 
Your son notices that there's water dripping into the sink in the kitchen. He tells you:
Mom, the faucet's dripping.
"Mom" is the most common title for people to call their mothers.
There are other titles that are not quite as popular but used in different situations:
Some people call their parents by their first names, but that's usually only after the children have grown up. It's also usually just for untraditional families.
The "faucet" is the thing that hangs over a sink, which water comes out of. The part that you turn is called a "handle" or "faucet handle".
A tiny ball of falling liquid is a "drop". When drops of liquid are falling out of something, you say that it is "dripping".
The words that appear most often with "drip" or "dripping" are:
You're talking to a child. You're explaining why the temperature is different at different times of year. You say:
As the Earth orbits around the sun, the angle at which sunlight hits the Earth changes.
Use this kind of grammatical structure to describe two things that happen at the same time. It's most commonly used for two continuing processes that happen together:
As you get older, you learn what your own strengths and limitations are.
"As ___, ___" is good for describing how things work. Here's a technical description of how water boils:
As the temperature of the water rises, some of the water molecules begin to go into a gaseous state.
To "orbit" something means to travel in a circular path around it. Planets orbit the sun, and the moon orbits the Earth.
Technically, the word "around" is not needed. A more grammatically correct sentence would be:
As the Earth orbits the sun, the angle at which sunlight hits the Earth changes.
But other phrases use "around" to describe the same motion, like:
So adding "around" to "orbit" might make it easier for someone to understand if they're not familiar with the meaning of the word "orbit".
The example at top includes the phrase "the angle at which sunlight hits the Earth". This is a reordered version of "hit (something) at an angle":
The light from the sun hits different parts of the Earth at different angles.
When you reorder a sentence, you still have to keep the preposition "at". There are two choices for where to put it:
As the Earth orbits around the sun, the angle which sunlight hits the Earth at changes.
As the Earth orbits around the sun, the angle at which sunlight hits the Earth changes.
The first version is a lot more casual. The second version sounds more intelligent. It's also considered more grammatically correct, so please use it when you're writing or answering a grammar question on a test.
This same structure works with other prepositions:
children (talking to), climate, explanation, formal, science, weather 