(1) -¤© »Ó¸¸ ¾Æ´Ï¶ó/À» »Ó¸¸ ¾Æ´Ï¶ó not only -, but also
This form is used to join two facts or events which relate to each other, in order to expand the first statement.

¼®À¯´Â ȯ°æÀ» ¿À¿°½Ãų »Ó¸¸ ¾Æ´Ï¶ó °¡±î¿î ¹Ì·¡¿¡ ¾ø¾îÁú °ÍÀÌ´Ù.
Not only does oil pollute the environment, but it will also disappear in the near future.
Çб³±îÁö´Â °Å¸®°¡ ¸Ö »Ó¸¸ ¾Æ´Ï¶ó ±æµµ º¹ÀâÇØ¿ä.
Not only is it far to school, but the roads are also complicating.
¼öÁö´Â ¾ó±¼ÀÌ ¿¹»Ü »Ó¸¸ ¾Æ´Ï¶ó ¸¶À½µµ ÂøÇØ¿ä.
Not only is Susie pretty, but she is also nice.
ÀÌ ¹æÀº Á¼À» »Ó¸¸ ¾Æ´Ï¶ó ³Ê¹« ÁöÀúºÐÇØ¿ä.
Not only is the room small, but it is also dirty.
À¯¹ÎÀÌ´Â ¼÷Á¦¸¦ ÇßÀ» »Ó¸¸ ¾Æ´Ï¶ó ¿¹½Àµµ Çß¾î¿ä.
Not only did Yumin do his homework, but he also prepared (for the next class).


(2) - ¹Û¿¡ ¾ø´Ù only
If ¡®-¹Û¿¡ ¾ø´Ù¡¯ follows a noun, then it means that there is nothing else more.

¼ö¼Ò¸¦ Å¿ö¼­ ¿¬·á·Î ¾²°í ³²´Â °ÍÀº ¹°¹Û¿¡ ¾ø´Ù.
The only thing leftover from burning hydrogen to fuel is water.
À¯¹ÎÀÌ°¡ °¡Áö°í ÀÖ´Â µ·Àº õ ¿ø¹Û¿¡ ¾ø¾î¿ä.
The only money Yumin has is 1,000won.
±×°É ÇÒ ¼ö ÀÖ´Â »ç¶÷Àº ¼öÁö¹Û¿¡ ¾ø¾î¿ä.
Susie is the only person that knows how to do it.
½Ã°£ÀÌ Á¶±Ý¹Û¿¡ ¾ø¾î¼­ ¼­µÑ·¯¾ß ÇØ¿ä.
We only have a little bit of time so we must hurry.
Áö±Ý ³ÃÀå°í¿¡ »ç°ú°¡ Çϳª¹Û¿¡ ¾ø¾î¿ä.
There is only one apple in the refrigerator.


(3) -ÁßÀÌ´Ù be -ing
This form, preceded by action verbs, indicates a process or continuing action.

¼ö¼Ò ¿¡³ÊÁö¸¦ »ç¿ëÇϱâ À§ÇÑ ¿¬±¸°¡ °è¼Ó ÁøÇà ÁßÀÌ´Ù.
There are many experiments being studied in order to use hydrogen as energy.
ÀÌ ¹®Á¦¸¦ Ç® ¼ö ÀÖ´Â ¹æ¹ýÀÌ ¹«¾ùÀÎÁö »ý°¢ ÁßÀÌ¿¡¿ä.
I am thinking about how I can solve this problem.
À¯³ª´Â ³»ÀÏ Áß¿äÇÑ ½ÃÇèÀÌ À־ °øºÎ ÁßÀÌ¿¡¿ä.
Yuna is studying for an important test tomorrow.
Áö±Ý ½Ä»ç ÁßÀÌ´Ï±î ³ªÁß¿¡ ´Ù½Ã ÀüÈ­ÇÒ°Ô.
I am eating now, so I will call you again later.
¸¶ÀÌŬ ¾¾´Â Áö±Ý ÈÞ°¡ ÁßÀÌ¶ó¼­ È¸»ç¿¡ ³ª¿ÀÁö ¾Ê¾Æ¿ä.
Michael is vacationing now, so he doesn't come to work.


(4) -¾Ò´Ù°¡/¾ú´Ù°¡/Çß´Ù°¡
This form is used to indicate reversal, nullification, or unanticipated consequence, following the completion of the first action.

ž翭 ÁÖÅÃÀº ³·¿¡ žçÀÇ ¿­·Î ¹°À» µ¥¿ö µÎ¾ú´Ù°¡ ¹ã¿¡ »ç¿ëÇÑ´Ù.
Solar houses heat water using daylight and use it at night.
Áý¿¡ µé·¶´Ù°¡ Ä£±¸ Áý¿¡ °¥ °Å¿¹¿ä.
I am going home first and then going to my friend's house.
Çѱ¹¿¡ °¬´Ù°¡ µ¹¾Æ¿Ô¾î¿ä.
I came back from Korea.
¹éÈ­Á¡¿¡ °¬´Ù°¡ ±ØÀå¿¡ °¥ °Å¿¹¿ä.
I am going to the department store and then going to the movies.
Àá±ñ ¹Û¿¡ ³ª°¬´Ù°¡ ±³½Ç¿¡ µé¾î¿À¼¼¿ä.
Please leave the classroom and come back in.