should do是什么時態

　　例：

　　She should do well in her studies this year ─ she's very focused.

　　今年她的功課應該學得好，她的注意力很集中。

　　With a little encouragement from his parents he should do well.

　　只要父母給點鼓勵，他應該會干得很好。

　　This extra strong glue should do the job.

　　這種超黏度膠應該管用。

　　Surely we should do something about it?

　　我們總得想個辦法吧？