would、將要 （語(yǔ)氣是一種客觀,陳述性的）
should、需要（語(yǔ)氣 強(qiáng),主動(dòng)）
could 可能,可以 （強(qiáng)、主動(dòng)）
might 可能、或許（弱,猜測(cè)）如果有一道題What do you think of his suggestion that we________the work before lunch?A：would finish；B：should finish；C：could finish；D：might finish；這道題考察的是哪個(gè)知識(shí)點(diǎn)。如果有一道題What do you think of his suggestion that we________the work before lunch?A：would finish；B：should finish；C：could finish；D：might finish當(dāng)然選B。What do you think of his suggestion that we should finish the work before lunch?你認(rèn)為他關(guān)于我們需要在午餐之前完成這項(xiàng)工作的建議如何？【we should finish the work before lunch】【我們應(yīng)該（需要、必須）在午餐之前完成這項(xiàng)工作】是建議，其他的都不通順。建議主動(dòng)去做某事，只能是should 。