How the word "underline" is translated into English
Please underline your surname on the form.
[ˈpliz ˈəndərˌlaɪn jər ˈsɜrˌneɪm ˈɔn ðə ˈfɔrm.]
Don't underline anything in your application, please.
[ˈdoʊnt ˈəndərˌlaɪn ˈɛniˌθɪŋ ˈɪn jər ˌæpləˈkeɪʃən, ˈpliz.]
I've underlined the most important dates in red.
[ˈaɪv ˈəndərˌlaɪnd ðə ˈmoʊst ɪmˈpɔrtn̩t ˈdeɪts ˈɪn ˈrɛd.]
"underline" is in the lesson "Application" (Level 40), along with 12 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.