As mentioned in our lesson about ‘saying that you want something’ with
がほしい, sometimes ほしい can be used as auxiliary adjective (an adjective that needs to be connected to another word in order to have meaning). In these cases, it will follow the 接続助詞（せつぞくじょし） (conjunction particle),
て. When used this way,
てほしい expresses that the speaker ‘wants somebody to do something’.
To use
てほしい, simply change the verb that you ‘want someone to do’ into its
て-form, and then add ほしい.
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もう一回（いっかい）説明（せつめい）してほしいです。
I want you to explain it one more time.
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皆（みんな）に俺（おれ）が書（か）いた漫画（まんが）を読（よ）んでほしい。
I want everyone to read the manga that I wrote.
てほしい can also be used to ask questions/explain about what other people want you (or somebody else) to do. Due to this, we will need to be careful when trying to identify who wants who to do what.
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手伝（てつだ）ってほしいの？
You want me to help you?
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キヨミがタケルに家事（かじ）を手伝（てつだ）ってほしいと言（い）っていた。
Kiyomi told Takeru that she wants him to help with chores.