‘Good at’ & ‘Bad at’

๐ŸŒธ verb (dictionary form) ใฎใŒใ˜ใ‚‡ใ†ใš
verd no ga jouzu

๐ŸŒธ noun ใŒใ˜ใ‚‡ใ†ใšใงใ™
noun ga jouzu desu

ใŠใจใ†ใจใฏใ†ใŸใ†ใฎใŒใ˜ใ‚‡ใ†ใšใ ใ€‚
otouto wa utau no ga jouzu da.
My little brother is good at singing.

ใ‚ใชใŸใฏใŠใ‚ˆใใฎใŒใ˜ใ‚‡ใ†ใšใงใ™ใ‹
Anata wa oyogu no ga jozu desu ka?
Are you good at swimming?

ใ‚ใŸใ—ใฎใซใปใ‚“ใ”ใฏใ˜ใ‚‡ใ†ใšใซใชใ‚Šใพใ—ใŸ
watashi no nihongo wa jouzu ni narimashita.
My Japanese has become better.

ใ‚ธใƒงใƒณใ•ใ‚“ใจใƒžใ‚คใ‚ฏใ•ใ‚“ใจใฉใกใ‚‰ใŒใƒ†ใƒ‹ใ‚นใŒใ˜ใ‚‡ใ†ใšใงใ™ใ‹ใ€‚
jon san to maiku san to dochira ga tenisu ga jouzu desu ka
Who is better at Tennis? John or Mike?

๐ŸŒธ verb (dictionary form) ใฎใŒใธใŸ
verb no ga heta

๐ŸŒธ noun ใŒใธใŸ
noun ga heta

ใ‚ใŸใ—ใฏใŠใ‚ˆใใฎใŒใธใŸใ ใ€‚
watashi wa oyogu no ga heta da.
Iโ€™m not good at swimming.

ใ‚ใŸใ—ใฏใซใปใ‚“ใ”ใŒใธใŸใงใ™ใ€‚
watashi wa nihongo ga heta desu.
Iโ€™m not good at Japanese.

ใ‚ใฎใฏใƒ†ใƒ‹ใ‚นใŒใธใŸใงใ™ใญใ€‚
Ano hito wa tenisu ga heta desu ne.
That guy is bad at Tennis, isnโ€™t he?

ใ‚ใŸใ—ใฏใƒ”ใ‚ขใƒŽใŒใปใ‚“ใจใ†ใซใธใŸใงใ™ใ€‚
Watashi wa piano ga hontou ni heta desu
Iโ€™m really bad at the piano.