to need
01
必要とする, 要する
to want something or someone that we must have if we want to do or be something
Transitive: to need sth
例
Do you need any help with your project?
プロジェクトの手助けが必要ですか？
02
必要がある, しなければならない
used for saying what one should or has to do
Transitive: to need to do sth
例
All I need to do is sign the contract to finalize the deal.
取引を完了するために私がする必要があるのは、契約に署名することだけです。
03
必要とする, しなければならない
to be required or obliged to do a certain thing
例
He need n't worry about the deadline, there's still time.
彼は締め切りについて心配する必要はありません、まだ時間があります。
Need
01
必要, 需要
a condition or situation in which something is necessary
例
He feels a deep need to be successful.
彼は成功したいという深い必要性を感じている。
02
必要, 必需品
(usually plural) a set of things that allow someone to achieve their goal or live comfortably
例
Food, shelter, and clothing are basic needs for human survival.
03
必要, 極貧
a state of extreme poverty or destitution
04
必要性, 需要
the psychological feature that arouses an organism to action toward a desired goal; the reason for the action; that which gives purpose and direction to behavior
