3.产生，开始存在_________________ 4.许多种类的___________________

5.不仅...而且_____________________ 6.从...那里了解到..._____________

7.确定地，有把握地_________________ 8.在如此短暂的时间内____________ 9.根据_____________________ 10.在过去的500年里_____________________

Answers:on the earth long before come into being many different kinds of not only...but also learn...from for sure in such a short time

According to in the last 500 years

Step3.one difficult sentence

They lived on the earth tens of millions of years ago long before humans came into being.千百年万年前，恐龙就在地球上生活，比人类出现要早得多。

本句中，long before的意思是___________.这里的before为______,有时before还可以作______或______.

如：They left school long before daybreak.﹝介词﹞

I've seen that film before. ﹝副词﹞

而before long是一个固定短语，意思是 "不久"

如：Before long he went to London.不久他就去伦敦了。

翻译：我在认识你之前很早就认识史密斯了。_______________________________________.

Answers:在...之前很久 连词 介词 副词 I knew Smith long before I know you.

GRAMMAR

Aims

Learn The present continuous tense of passive voice

Procedure

1. 现在进行时的被动语态的结构是：be+being+done

现在进行时的be动词用__________;过去时be动词用________

2. 现在进行时表示一下几种含义：如：

⑴The question is being discussed at the meeting now.﹝翻译﹞

_______________________________________________-.

⑵表示现阶段进行的被动动作，但不一定发生在说话的这一时刻。如：

More milu deer are being moved to a new large nature park.﹝翻译﹞

⑶表示经常性被动行为常与always,constantly等词连用。如：She is always being praised by the teacher.﹝翻译﹞

⑷还可表示按计划，安排主语将要承受谓语动词的动作﹝仅限于少数及物动词。如：

It is said that a plane is being flown by him to America at eight next Sunday morning.﹝翻译

_______________________________________________________________.

Answers: am is are was were 这个问题现在正在会议上讨论着。更多的麋鹿正在被运往一个新建的大型自然公园里去。她经常受到老师的表扬。据说下星期天上午八点一辆飞机将