A flash interrupted the program .

5 . lack 既可用作名词，意为“欠缺，不足”；也可用作动词，意为“缺少……， ( 对 ) ……不充裕”。例如：

The project failed due to lack of money .

Lack of heat made us cold .

She lacked the experience to get the job .

They are so rich that they lack for nothing .

6 . need 既可用作实义动词，也可用作情态动词，意为“需要”。

①用作实义词时，其后通常跟名词，带 to 的不定式或动词 - ing 形式作宾语。例如：

I need your help .

Here are some exercises that need to be done after class .

Your telephone needs repairing ( = to be repaired ) .

②用作情态动词，通常用在否定句或疑问句中。例如：

“Need you go now?”“You , I must . ”

You needn\'t come to the meeting this afternoon if you have something important to do .

7 . announce 用作动词，意为“发表……，宣布……，告知”，其名词形式为 announcement。

The government announced its new economic policies .

The news was announced to the public on TV .

Please announce to your class that there will be no school tomorrow .

A warm sunshine announces the coming of spring .

I\'d like to make an important announcement .

8 . recognize 用作及物动词，意为“认出；辩认”。例如：

He didn\'t recognize me in my disguise .

I recognized his voice over the phone .

另外，recognize 还可以作“承认”；“意识到”解。例如：

He refused to recognize her as his lawful heir .

We recognize that country as an independent state .

单元词组思维运用

1 . All the best . 是临别时表示祝愿的用语，相当于“All the best wishes to you . ”的意思。也可以说：All the very best . 后面还可以加适当的状语。例如：

All the best in your new job .

All the best with your family .

All the best in your study／business .

2 . have a word with 意为“和……说句话”，其中的 a word 也可以用 a few words 代替，表示“ ( 说 ) 几句话”的意思。例如：

May I have a word with you?

I want to have a few words with you , are you free now?

The teacher would like a word with you in his office .

Is Miss Mary in? I\'d like to have a word with her .

3 . in other words 意为“换句话说；换言之”；而 in a ( one ) word 意为“总之，总而言之”；in words 意为“用语言，用文字”。例如：

They are not the revolutionary in deeds , but in words .

In a word , they are working very hard .

An apple a day keeps a doctor away . In other words , eating some fresh fruit every day will do good to people\'s health .

In other words , we can finish the work on time only in this way .

He has been working too much , and is not at all well . In other words , he needs holiday .

4 . bring along 意为“把……带来，领来”。例如：

I want to bring my friend along to see you .

Bring your suitcase along with you .

5 . be connected with 的意思是“与……有关” ( = to be related to ) 。例如：

I always considered your brother to be connected with that club .

The meeting was connected directly with this affair .

He is in no way connected with this business .