【句子】
Often very annoying weeds, goldenrods crowd out less hardy plants and act as hosts to many insect pests.
黄菊花通常令人生厌，它挤走不那么顽强的植物，并找来很多害虫。
【解析】
1.annoy
1)v.使恼怒;使烦恼;骚扰
Some peoples' daily mission is to annoy you!
一些人的日常使命就是骚扰你!
2)annoy的词汇搭配
～+名词
annoy the enemy 骚扰敌人
副词+～
excessively annoy 极度恼怒
greatly annoy 非常烦恼
much annoy 很生气
～+介词
be annoyed about 为…感到烦恼
be annoyed at 为…而生气
be annoyed beyond measure 生气极了
be annoyed by the neighbours 受邻居打扰
be annoyed with 对(某人)生气
3)annoy的用法
①后面可以接that从句
She is annoyed that he has not answered her letter.
他没有给她回信使她很恼怒。
②annoy的基本意思是“打扰,干扰”,引申可作“使烦恼,使恼怒”解,强调经常的、不断的干扰、激怒或苦恼。只用作及物动词,其后多接名词、代词作宾语。
③annoy表示“因…而生气”时,常用于be ～ed 结构。be annoyed后常接介词at, by, with，介词with之后一般只接人;be annoyed之后还常接动词不定式或that从句。
2.weed
1)n.杂草;野草
The garden is choked with weeds.
花园杂草丛生。
2)vi.除草;清除;淘汰
Tomorrow I have to weed the garden.
我明天得给花园除草。
3.crowd用法
1)用作名词，是集合名词。作主语时，谓语用单数(视为整体)或复数(考虑其个体成员)均可。
The crowd moves on, and no one tries to stop it.
人群向前移动，谁也没试图阻止。
2)用作动词，表示“聚集”、“挤满”，可用作及物或不及物动词。
Shoppers crowded the streets.
买东西的人挤满了大街。
3)派生形容词 crowded 意为“拥挤的”。
crowded trains (hotels, roads, shops)
拥挤的火车(旅馆，道路，商店)
但是，汉语的“拥挤的交通”不能直译为 crowded traffice, 而是用 busy [heavy] traffic。
4.act重要短语
1)act as (临时)担任，充当，起……的作用
A trained dog can act as a guide to a blind person.
经过训练的狗可以担任盲人的向导。
2)act for 代理(某人职务)，代为(处理某事
Please act for me during my absence.
我不在时请代理我处理事务。
3)act out (用手势和语言)表演出来
Let’s act out the story of the three bears once more.
让我们再把这三只熊的故事表演一次吧。[heavy] traffic。
4) act on (upon) 对……起作用，对……有效
Alcohol acts on the nervous system.
酒精对人的神经系统有影响。[heavy] traffic。
5) in the act (of) 当场，正在动作时
He was caught in the act (of reading my private letters).
他(在读我的私信时)被当场抓住。
【练习】
1、The crowd cheered wildly at the sight of Liu Xiang, who was reported _____ the world record in the 110-meter hurdle race. (07辽宁)
A breaking B having broken
C to have broken D to break
