(something) needs to be (done)

Use "___ needs to be ___" to talk about work that someone needs to do:

It needs to be done soon.

English speakers use "be __" to avoid saying exactly who should do something. For example, you might say this this to an employee:

The files in this folder all need to be reviewed.

Instead of this:

You need to review the files in this folder.

The first one sounds softer and less direct.

Or you can say "___ needs to be ___" if you don't know who should be responsible:

That old building needs to be knocked down.

Use "___ doesn't need to be ___" when it's OK not to do something:

No, they don't need to be cooked. You can eat them just like that.

water (a plant)

When you give a plant water, it's called "watering" the plant.

Can you water the plants for me while I'm away?

You can also "water" a garden or lawn:

The best time to water your lawn is in the early morning.

The good thing about (something) is (something)

Describe positive points of something with this phrase:

The good thing about Joe is that he always keeps his promises.

The good thing about traveling in that part of the world is how cheap everything is.

The really good thing about this house is the kitchen.