힘이 약하다

The correct order to form 'I am weak' is '저는 (I) 힘이 (strength) 약해요 (am weak).'

The correct order to form 'The baby is still weak' is '아기가 (The baby) 아직 (still) 힘이 (strength) 약해요 (is weak).'

The correct order to form 'He is weak' is '그는 (He) 힘이 (strength) 약해요 (is weak).'

The correct order is '그는' (he) '몸이' (body) '약해서' (because it's weak) '오래' (for a long time) '걷지 못해요' (cannot walk).

The correct order is '경제가' (economy) '힘이' (strength) '약해져서' (because it weakened) '많은 사람들이' (many people) '어려움을' (difficulties) '겪고 있어요' (are experiencing).

The correct order is '오랫동안' (for a long time) '병을' (illness) '앓아서' (because I was sick) '힘이 약해진' (my strength weakened) '것 같아요' (it seems like).