難しい, 困難な
反対語easy （易やさしい）
This is a difficult math problem.
This is a difficult math problem.
これは難しい数学の問題だ.
This question is too difficult (for me) to answer.
This question is too difficult (for me) to answer.
この問題は（私には）あまりに難しくて答えられない.
It is difficult for us to master English.
It is difficult for us to master English.
私たちが英語をマスターするのは難しい.
⦣ It ＝to master （マスターすること）以下. ×We are difficult to do ～ としない.
＊会話＊
How did today's tests go?—The math test was more difficult than the English test.
きょうの試験はどうだった?—数学の試験が英語の試験よりも難しかった.
