light up

quietdandelion

Banned
Formosa/Chinese
Is "light up" equal to "brighten up"? Do they both fit in the following blanks?

1. Thousands of lanterns _______ the night sky.

2. The flowers I picked will help _______ your day.

3. I'll _______ your room, starting with opening your windows.
 
  • maxiogee

    Banned
    English
    1. Thousands of lanterns _______ the night sky. (only 'light up' fits here)

    2. The flowers I picked will help _______ your day. (only 'brighten up' fits here)

    3. I'll _______ your room, starting with opening your windows. (Either could fit, but in relation to a room, 'light up' would tend to imply lighting a light.)
     

    maxiogee

    Banned
    English
    1. Thousands of lanterns _______ the night sky. (only 'light up' fits here)

    2. The flowers I picked will help _______ your day. (only 'brighten up' fits here)

    3. I'll _______ your room, starting with opening your windows. (Either could fit, but in relation to a room, 'light up' would tend to imply lighting a light.)

    Hi, Maxiogee:

    Could you explain why?

    Thanks~!

    1. Because the lanterns only light up tiny places, they do not brighten up the overall blackness of the night sky.
    2. Because the flowers do not illumine, they only add 'mood' and in that way 'brighten' the room. There is no increase in light.
    3. The 'windows' might involve curtains or shutters and opening them would increase the amount of light entering the room. However, if there are no curtains or shutters then opening the windows wouldn't noticeably increase the amount of light, but it would refresh the air in the room and thus 'brighten' the room.
     

    hly2004

    Banned
    chinese
    Hi, Maxiogee:

    Thanks, I now see the differences. So I'd like to conclude with a summary:

    literally:

    light up something ( in part ) vs brighten up something (totally)

    The sky is brightened up by the sun. ok?
    The sky is lit up by the fireworks. ok?

    not literally:

    brighten up something(a day, etc) vs (someone's eyes face) light up etc.

    I'm wondering when they can be interchangable. Thanks again:)
     
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