完成式、完成進行式 (下)

完成式中，以下哪個副詞可以用來表示次數？

• yesterday

• never

• soon

• once

在使用 since 時，以下哪種搭配是正確的？

• since 後面加現在式

• since 後面加過去式子句

• since 後面加現在完成式

• since 後面加未來式

以下哪個句子正確地使用了 since 作為副詞？

• Sandra has been a movie buff since she was a high school student.

• Sandra has been a movie buff since she has been a high school student.

• Sandra has been a movie buff since she will be a high school student.

• Sandra has been a movie buff since she is a high school student.

過去完成式的使用時機是什麼？

• 描述未來的動作

• 描述現在的動作

• 描述過去兩個動作中較早發生的動作

• 描述過去的瞬間動作

以下哪個句子正確地使用了過去完成式？

• By the time Linda arrived, Joanne is finishing her assignment.

• By the time Linda arrived, Joanne had finished her assignment.

• By the time Linda arrived, Joanne finishes her assignment.

• By the time Linda arrived, Joanne will finish her assignment.