問題文全文(内容文)：
N.T. SERIES Third Edition Stage3 Lesson5-1のkey point 解説動画です。

＜内容＞
・相関接続詞
both A and B, not only A but (also) B, either A or B, neither A nor B
・～も同じ
So am I / So do I / Neither am I /Neither do I などの表現
を丁寧に解説しております。
・また、ここでは紹介されていませんが、either　neither　の別で混同しやすい表現についても補足をしております！

＜例文＞
①James is interested in both agriculture and medical science.
②He studies not only in the classroom, but also in the laboratory.
③At university, he will major in either biology or chemistry.
④He wants neither fame nor money. He just wants to be a researcher.
⑤I'm interested in the results of the experiment.
―　So am I.
⑥I don't know why the experiment failed.
―　Neither do I.
⑦His father worked in the laboratory and so did his mother.
⑧I can't understand his research method.
―　Neither can I.

問題文全文(内容文)：
there are even some things we can do with writing 『that』 we cannot do with speech
の『that』ってなんだろう！？

問題文全文(内容文)：
「スマホは便利だ」をどう表す？

テスト（英訳問題）
人間は生きるのに水が必要だ。

問題文全文(内容文)：
signaling deviceのsignalingは分詞でしょうか？

問題文全文(内容文)：
N.T. SERIES Third Edition Stage3 Lesson2-1の解説動画です。
助動詞は暗記がメインであることを踏まえ、暗記が少しでもラクになるための勉強法や法則、分類の仕方を指導しています。

今回はメインの助動詞のうち、推量の意味を中心に指導してmustの周辺や、not の位置などテストに出題されたら間違えやすいものを強調して例文の解説を行っています。

If it's stormy, the train may stop running.
The typhoon might be stronger than I expected.
Your parents have been waiting for your call. They must be anxious.
The ship should leave around lunch time.
You ought to check the exact time of departure.
※She had better wear her sunglasses because the sun is strong today.
※Traffic may be heavy on Friday evening, so they had better not take the bus.