問題文全文(内容文)：
Lesson12-3 Stage2 解説していきます.

問題文全文(内容文)：
【問】
The Earth has been around for approximately 4.5 billion years.

【問】
The train ( ) when I reached the platform, so I didn't have to wait in the cold.
① had already arrived
② has already arrived
③ previously arrived
④ previously arrives
(センター)

【問】
He asked me what I ( ) studied in the morning.
① did
② had
③ have
④ was
(青学)

【問】
Naomi ( ) reading the Bible before everyone else was only halfway through.
(1) had finished
(2) have finished
(3) has finished
(4) will finish
(青学)

【問】
It's our wedding anniversary next Tuesday, and by then we ( ) married for ten years.
① are
② will have
③ will have been
④ would have
(センター)

【問】
I heard you ( ) haven't finished your report. The teacher is going to be very angry.
① already
② so far
③ still
④ yet
(センター)

問題文全文(内容文)：
be toを全紹介！見分け方もマスターしてしまいましょう！

問題文全文(内容文)：
前置詞「in」と「on」の違いを解説します。

それぞれの前置詞のイメージを理解しながら、学びましょう！

違いを明確にしながら、以下の英文を訳してみましょう！
・I sit down on the chair.
・I sit down in the chair.
・I am lying on the bed.
・I am lying in the bed.

問題文全文(内容文)：
動詞の前に「do」が入るときの意味を解説します。

状況によって使い分けが出来るようになりましょう！