need后面加to do还是doing

need to do 需要做某事，表示主动，主语一般为人，need doing 某物/人需要被做某事，表示被动，主语一般为物。

Children need to be cherished.

儿童需要无微不至的爱护。

We need to preserve the forest.

我们需要保护森林。

They need to feel they belong.

他们需要有归属感。

I need to lengthen this skirt.

我需要把裙子放长。

You need to practise every day.

你需要每天练习。

We need to plan for the future.

我们需要为将来作好打算。
摘自: www.ws46.com

We'll need to start at 7.00.

我们需要在7点钟出发。

We need to stock up the freezer.

我们需要在冰柜里存满东西。

We need to increase productivity.

我们需要提高生产力。

The cut will need to be stitched.

这伤口需要缝合。

I need to work on my swing.

我需要改进我的挥杆动作。

need to doing举例：

We need to do something to relax.

我们需要做些事情来放松放松。