熊茶壜

Day 26
The sign reads,"Please let the elderly (to sit → sit) in these seats."
let は目的語のあとに原形不定詞を取る。

I saw him sign his name

Exercise
tell A to do 「Aに～しろと言う、命じる」を表す。
say を使う場合は、say for(to) A to do のようにAの前に前置詞が必要になる。

She waved goodbye with tears in her eyes as she watched (him drive away).

前回と同じミス。
選択肢
he drive away
him drove away これを選んだ。
him drive away
his driven away
watch A do でAが～するのを見守る、を表す。watch の目的語のあとに来るのは動詞の原形。