The fridge ?the food fresh 中间应该填什么加keep?可以选used to ,be used to do, be used to doing

The fridge ?the food fresh 中间应该填什么加keep?可以选used to ,be used to do, be used to doing
The fridge ?the food fresh 中间应该填什么加keep?
可以选
used to ,be used to do, be used to doing

The fridge ?the food fresh 中间应该填什么加keep?可以选used to ,be used to do, be used to doing
is uesd to keep
used to表示过去曾经发生而现在停止了,不再发生.
He used to get up early.(他过去起得早,现在不了.)
be used to do被动语态表示被用来做...
此句符合.
be used to doing表示习惯于做.
She is used to living in big cities now.(她现在已经习惯了住大城市的生活.)
区分好这三个词很重要.
加油!

The fridge is used to keep the food fresh.
此处BE USED TO DO STH表示被用来做某事

The fridge is used to keep the food fresh .
用作干什么

be used to
used to do 曾经一直做什么
be used to do用来做什么
be used to doing 习惯做什么

is used to keep
被用于保持食物新鲜
used to是过去常常
be used to doing 是现在常常
这是客观规律所以用be used to do