英語の文法において、反射代名詞（Reflexive Pronouns）は、文の主語が行った行動が主語自身に戻ってくることを示すときに使います。たとえば、「She taught herself to play the guitar」のように、行動が主語「She」に戻ってくる場面で反射代名詞「herself」を用いて表現します。
この演習を通じて、反射代名詞の使い方をより深く理解することができるでしょう。各文には空欄があり、適切な反射代名詞を埋めることで、文法力を向上させましょう。反射代名詞は文脈に応じて様々な形がありますので、注意して選ぶ必要があります。それでは、演習を始めましょう。
演習１：反射代名詞の選択
He cut *himself* (him) while shaving this morning.
She made this dress all by *herself* (her).
The cat can entertain *itself* (it) for hours with a simple toy.
They installed the shelves by *themselves* (them) without any help.
The children baked the cookies all by *themselves* (they).
Please, make *yourself* (you) at home.
I’m not sure the problem can solve *itself* (it).
You should be proud of *yourself* (you) for doing so well on the test.
The baby saw *herself* (she) in the mirror and started to giggle.
After a long discussion, we decided to do the project *ourselves* (we).
I accidentally locked *myself* (I) out of the house.
He taught *himself* (he) how to play the piano.
She often talks to *herself* (she) when she’s working on difficult problems.
The CEO likes to think of *himself* (he) as a simple man.
The players congratulated *themselves* (they) after a great game.
演習２：反射代名詞の文の完成
Susan and Mary prepared the whole event by *themselves* (they).
The machine turns *itself* (it) off automatically after two hours.
You’ll have to finish the task by *yourself* (you); no one else is available to help.
I accidentally hurt *myself* (I) while doing some repairs at home.
The boys built a tree house by *themselves* (they).
Don’t blame the others, you did it to *yourself* (you).
The teacher was impressed because the student corrected the mistakes by *himself* (he).
In the quiet of her study, she allowed *herself* (she) to cry.
We should all challenge *ourselves* (we) to be better each and every day.
The dog likes to chase *itself* (it) in circles in the backyard.
When I looked in the mirror, I didn’t even recognize *myself* (I).
The celebrity didn’t want any attention; he just wanted to be left by *himself* (he).
She volunteered to help not for any reward but for the satisfaction of *herself* (she).
You must believe in *yourself* (you) if you want others to believe in you.
At the end of the day, we can only rely on *ourselves* (we).
