2018年高考英語重難點總結
2.except for, except, besides, but, but for用法區別
except for用于非同類事物，它的賓語與前述對象不屬同類。
eg: the essay is generally good except for some spelling mistakes.
but for=without表示“要不是……”。一般放在句首，表達語氣是虛擬的，主句也用虛擬。如：
but for the party, we would never get a good life.
except和besides用于肯定句時，except表示“除……之外（不再有）”強調除去部分；besides表示“除……之外（還有）”強調還包括的部分。如：
we all went hiking except jack.(jack不去)
we all went hiking besides jack.(jack也去)
except, besides, but用于否定句時可互換，如：
nobody could get the certification except/besides/but you.
謂語是do時，except/but后的不定式省去to. 如：
he did nothing but/except stay at home all day.
but前沒有do時，but后不定式要帶to，如：
we have no choice but to wait.
3.定語從句中關系代詞只能用that的情況
1)先行詞是all, few, little, much, something, nothing, anything等。如：
that is all that i want to tell you.
2)先行詞被all, few, any, every, little, no, some修飾時。如：
i have finished every book (that) my teacher lent me.
3)被序數詞或形容詞最高級修飾時，如：
the second lesson that she learned will never be forgotten.
4)先行詞被only, the very, the same, the last修飾時，如：
he is the only one that i want to see.
5)先行詞既有人又有物時，如：
we were talking of things and persons that we remembered in the liberated area.
4.as作關系代詞或關系副詞引導定語從句時，as可作主語，表語，這個定語從句說明或代表整個主句，并可以放在主句之前。如：
as we all know, english is spoken all around the world.(as作賓語)
as is known to all, there is no ghost in the world.(as作主語)
5.助動詞do使用不同的時態替代前文提到過的某一動詞詞組以避免重復。如：
in the same way americans use the expression "i guess" just as the british did (這里的did替代前面的used the expression “i guess”) 30 years ago.
6.主語+have+(no, little, some, much, great, ...) difficulty/trouble in doing sth.做某事有困難/麻煩。如：
i have no difficulty in getting a job.
三、常用詞語和句型
1.more or less 多少；有點兒；或多或少有幾分
eg: i hope he can give you more or less help.
the child is more or less tired.
2.mean(meant, meant) 意味；打算；意欲
i'm sorry, i didn't mean to.(我不是故意的)
mean to do打算做……
he meant to have lunch here.
mean sb to do打算做……
i mean you to have dinner with me tonight.
mean (doing) sth打算做……
to him, doing nothing means giving up.
3.communicate with sb.與……人溝通，通信。
my friend often communicates with a foreigner by letter.
communicate sth. to sb.把……通知/告訴某人
i like communicating my plans to him.
4.knowledge知識；認知；消息；knowledge of“了解”