4.To prevent this from happening again, John Snow suggested that the source of all the water supplies be examined.

为了防止这种情况再度发生，约翰·斯诺建议所有水源都要经过检测。 suggest表示"建议"时，其后宾语从句中的谓语动词常常使用"(should＋)动词原形"。但表示"表明；暗示"时不用虚拟语气。 My deskmate's sleepy look suggested that he was_tired_of his study and I suggested he (should)_have_a_rest.

我的同桌困倦的表情表明他学习累了。我建议他休息一下。 　　

　　1．(教材P1)Who put forward a theory about black holes?

　　谁提出了关于黑洞的理论？

　　put forward

　　写出下列句中put forward的含义

　　①They've put the date of their wedding forward by one week.提前

　　②She put forward a good suggestion at the meeting.提出

　　③You ought to put your watch forward by ten minutes.将(钟表)向前拨

　　④Can I put you forward as our club secretary？提名；推荐

　　put aside　　　　　 节省；储蓄；储存；留出；放一边

　　put away 放好；存起来

　　put off 延期；推迟

　　put up 举起；张贴；建立；提供食宿

　　put up with 容忍；忍受

　　⑤Encourage children to_put_aside some of their pocket money to buy Christmas presents.

　　鼓励孩子们存下一部分零花钱来购买圣诞礼物。

　　⑥It has become a habit for some students to put_off their homework.

　　对有些学生来说推迟他们的作业已成为一种习惯。

　　2．(教材P1)Draw a conclusion

　　得出结论

conclusion n．结论；结束