She opened the window to let in fresh air.

Meaning: This means that she moved the window to create a space to allow new and not spoiled air to come in.

Choice of Words: Opened means to move something to create a space. Window is an opening in a wall or roof to let in light and air. Let means to allow something to happen. Fresh means new and not spoiled. Air is the mixture of gases we breathe. The sentence describes someone airing out a room.

Alternative Expressions

She threw open the window to let in fresh air.

Meaning: This means that the person opened the window quickly and forcefully so that fresh air could come into the room. It's like saying, She moved the window quickly so that new air could come in.

Choice of Words: Threw is a past tense verb that means to move something quickly and forcefully. Open is an adjective that means not closed. The window is the object of the sentence and refers to the thing that is being opened. To let in is an infinitive phrase that means to allow something to enter. Fresh air is the object of the infinitive phrase and refers to the air that is entering the room.

She cracked open the window to let in fresh air.

Meaning: This means that the person opened the window slightly so that fresh air could come into the room. It's like saying, She moved the window a little bit so that new air could come in.

Choice of Words: Cracked is a past tense verb that means to make something slightly open. Open is an adjective that means not closed. The window is the object of the sentence and refers to the thing that is being opened. To let in is an infinitive phrase that means to allow something to enter. Fresh air is the object of the infinitive phrase and refers to the air that is entering the room.

Related Expressions