unit 5语法（单元5语法）.doc

unit 5语法（单元5语法） unit 5语法 1. linking verb + the 系动词 + 形容词, 构成系表结构. 系动词: well (是) feel look sound taste turn get become smell seem 等等. for example: the food tastes delious. 2. hope 与wish 的比较.都与that引导的从句连用.hope常用于将来时表可能实现的愿望. wish常用于过去式表示不可能实现的愿望. for example: i hope that you will be happy. i wish that you could be happy. 3. 动词 - ing 和 - ed形式作主语补语的区别.动词 - ing表示主语的特征, 常用于事物.动词 - ed表示主语的状态, 常用于人.这类词有: interest move active disappoint excite surprise frighten bore等等. for example: the game is interesting. i am interested in the game. 4.表示能力的词. could 表示过去的能力. can 表示现在的能力 be able to 表示过去, 现在, 将来任何时候的能力.将来时态 (e \ will be able to - - - -) 5. 原因状语从句.引导词: because since i know 等, 但是因为, 所以不能同时出现. for example: he is ill, i know he isnt able to come. she is lonely because she has no friends to talk with. since she is very strict with herself, she is unhappy. 6. always 常用于一般现在时.表示频繁发生的动作.但与现在进行时态连用表是厌恶, 责备, 赞扬的语气. for example: she is always talking about money. 7. cant 表示一种否定的推测.you cant have sars. must 表示一种肯定的推测.it must be sunny day tomorrow 8. 使役动词 (让―――＼ 使――) make let have 的用法. make + 宾语＋ (省约to 的不定式) 动词. make + 宾语＋名词.we make him team leader. make + 宾语＋形容词.it make me happy. let + 宾语＋ (省约to 的不定式) 动词. have + 宾语 + (省约to 的不定式) 动词 老师叫john到办公室拿他的书. the teather made (had) john get his book in the office. 爸爸让我明天下午看电视. father let me watch tv tomorrow afternoon. 9. 英语语法as...as、so...as、so...that和too...to的用法区别 ①so...as只用于否定句, as...as不但可用于肯定句, 还可用于否定句 ②as...as中的第一个as是副词, 后接形容词或副词的原形; 第二个as是连词, 引导比较状语从句. 例如: jack is as tall as you. 杰克和你一样高. jim is not so / as good as you. 吉姆不如你聪明. ③so that 如此...以至于 (只能引导结果状语从句, 的后面多接形容词、副词或分词, 后接句子. 例如: the house was so crowded that i could hardly turned around. 屋里很挤, 我几乎都无法转身了. ④too d 太...以至于不能... (too为副词, 后接形容词或者副词, to为不定式的标志, 这个不定式短语本身带有否定含义.) 例如: the box is too heavy for her to carry it. 对于她来说, 这个箱子太重了. She cant carry it 10. few; a few; little; a; little usage and difference 1 (a) and few (a) little difference From the modified noun: (a) few, followed by coun