7 sentences

1. 我弟弟今年十七岁。

   wǒ dì​di jīn​nián shí​qī suì.

   My younger brother is seventeen years old this year.

   Source: Dong Chinese Dictionary

2. 我十七岁就离家了。

   wǒ shí​qī suì jiù lí​jiā le.

   I left home when I was 17.

   Source: OpenSubtitles

3. 我的朋友十七岁了。

   wǒ de péng​you shí​qī suì le.

   My friend is seventeen years old.

   Source: Tatoeba

4. 再过两个月，我就十七岁了。

   zài guò liǎng gè yuè, wǒ jiù shí​qī suì le.

   In two months, I'll be seventeen.

   Source: OpenSubtitles

5. 我十七岁了。

   wǒ shí​qī suì le.

   I'm 17 years old now.

   Source: OpenSubtitles

6. 她十七岁了。

   tā shí​qī suì le.

   She's seventeen.

   Source: OpenSubtitles

7. 婚礼会在一座十七世纪的教堂里举行。

   hūn​lǐ huì zài yī zuò shí​qī shì​jì de jiào​táng lǐ jǔ​xíng.

   The wedding will be held in a 17th century church.

   Source: Tatoeba