未来の義務
形状
未来の義務に関して書く場合、二つの要素から成る正式なパターンを使うことが出来ます。
主語に見合った動詞 to be の現在形 + 主動詞の不定詞
To travel、未来の義務として
| 肯定文 | 否定文 | 疑問文 | 否定疑問文 |
|---|---|---|---|
| I am to travel. | I am not to travel. | Am I to travel? | Am I not to travel? |
| You are to travel. | You are not to travel. | Are you to travel? | Aren't you to travel? |
| He is to travel. | He is not to travel. | Is he to travel? | Isn't he to travel? |
| It is to travel. | It is not to travel. | Is it to travel? | Isn't it to travel? |
| We are to travel. | We are not to travel. | Are we to travel? | Aren't we to travel? |
| They are to travel. | They are not to travel. | Are they to travel? | Aren't they to travel? |
機能
英語の文書では、今より後で何かをしなければならないという義務や要求を述べる場合に、このパターンを用いることが出来ます。 mustの意味に似ていますが、私達のために何かが取り決められた、あるいは企画されたことを示唆します。通常、英語の会話では使われません。
例
- You are to leave this room at once, and you are to travel by train to London.
- In London you are to pick up your ticket from Mr Smith, and you are to fly to your destination alone.
- When you arrive, you are to meet our agent, Mr X, who will give you further information.
- You are to destroy this message now.