Can I have my visa extended for just one extra month?
Can I～?「できますか？」
have my visa extended「ビザを延長してもらう」
※have OC「OをCの状態にする」という意味の表現で、ここでは「ビザを延長された状態にする」ということで、受け身を表す過去分詞extendedを用いています。
「１か月だけ」はfor just one extra monthという表現もできます。
extraは「余分の」とか、このような文脈では「追加の」を意味します。
ご参考になれば幸いです。
There are two useful verbs in this situation. The first is "extend". This is when you lengthen something. In this case, it is the visa time that is being extended. You can also use the word "renew". When you renew a visa you get a new that will last as long as the original one did.
この状況で使える便利な動詞が二つあります。
一つ目は "extend" です。これは「延長する」の意味です。この場合はビザを延長するわけです。
もう一つ、"renew" という単語も使うことができます。"renew a visa" は、元のと同じ期間ビザを延長することをいいます。
"I would like a one-month visa extension." is a very straightforward and concise way to say you want to extend your stay in another country.
"I would like to extend my visa for another month." is a little less formal but still polite.
"I would like a one-month visa extension."（一カ月ビザを延長したいです）
これは外国での滞在を延長したいことを伝える簡潔で単刀直入な言い方です。
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"I would like to extend my visa for another month."（もう一カ月ビザを延長したいです）
こちらの方が少しインフォーマルですが、それでも丁寧です。
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I would like an additional month extended on my visa?
May I have an extension of another month on my visa?
"I would like to add another month to my visa?"
"I would like an additional month extended on my visa?"
"May I have an extension of another month on my visa?"
These are some easy and polite ways to ask for an extension on your visa.
"I would like to add another month to my visa?"（ビザを1カ月延長したいです）
"I would like an additional month extended on my visa?"（ビザを1カ月延長したいです）
"May I have an extension of another month on my visa?"（ビザを1カ月延長してもらえますか）
これらは、ビザの延長を求めるときの簡単で丁寧な言い方です。
I would like to extend my visa for one month more.
We use the phrase "would like" to talk about desires that may or may not come true. With this sentence, "more" is a qualifier that is referring to the word month to express how much you want to extend your visa. I hope that this helps :)
I want to extend my visa for one more month for work purposes
I need a visa extension for one more month for work.
I need to make sure my visa can be extended for one more month
"I want to extend my visa for one more month for work purposes" , "I need a visa extension for one more month for work." and " I need to make sure my visa can be extended for one more month" are great ways to explain that you want to extend your visa and the reasons behind that.In any complex sentence you basically need to make sure that you have the right word order as well as a subject,object and verb.This will ensure that your audience understands and follows what you are trying to say.
"I want to extend my visa for one more month for work purposes"（仕事のためにもう一カ月ビザを延長したいです）
"I need a visa extension for one more month for work."（仕事のためにもう一カ月ビザを延長しないといけない）
"I need to make sure my visa can be extended for one more month"（もう一カ月ビザを延長しないといけない）
これらは、ビザを延長したいことそしてその理由を伝える素晴らしい言い方です。
複雑な文章では、主語・目的語・動詞を入れて、それらを正しい語順で並べるようにしましょう。これができれば、相手に言いたいことが伝わります。
日本 
アメリカ合衆国 
南アフリカ 
