2018年高考英語重難點總結
he allowed me to take his dictionary. 他允許我拿走他的詞典。
will you allow me to use your bike?我可以用你的自行車嗎？
we don't allow smoking here. 我們不允許在這兒抽煙。
而let作“允許”或“讓”解，主要用于口語，一般可與allow互換。作“允許”解時，常暗含“聽任”“默許”之意。注意： let之后作賓補的不定式不帶to， 且不可用于被動語態，而allow則相反。例如；
please let me walk with you (=please allow me to walk with you. ) 我（請允許我）跟你一起走。
4. it is from the early 1990s that scientists started to develop new techniques to increase agricultural production without harming the environment. 科學家開始發展研究既提高農業產量又不破壞環境的新技術是在二十世紀九十年代。
[問]該句中develop是什么意思？介詞without有什么用途？
[答]develop 意為：發展，發達，發揚，發育，進步，逐步生長，逐步顯示出來”等。如：
plants develop from seeds. 植物由種子發育而成。
several industries are developing in this area. 幾種工業正在這個地區發展。
some children develop more slowly than others. 有的兒童比其他的兒童發育得慢。
fresh air and exercise develop healthy bodies. 新鮮空氣和運動能使身體健康。
he developed the photo graphs which he had taken. 他沖洗了他拍攝的膠卷。
developing 意為：“發展中的”， developed意為“發達的”，如：
china is a developin country while japan is a developed one. 中國是個發展中的國家， 而日本是個發達的國家。
介詞without 表示“不，沒有”， 后接名詞、代詞或-ing形式，在句中用做狀語、表語或定語，如：
she day passed without seeing me. 她從我身邊走過而沒有看見我。
they never meet withour quarreling. 他們一見面就要吵嘴。
future agriculture should depend on high technology as well as traditonal methods. 未來的農業將依靠高科技和傳統的方法。
[問]as well 和as well as有什么不同？
as well意為： “還；也”， 相當于too， 通常位于句末。 如：
he gave me advice, and money as well. 他給我忠告，也給我錢。
she went there as well. 她也去了那兒。
as well as 與as well 同意，但常用來連接兩個并列成分，可譯為：“除……之外；和”。強調的重點在第一個成分。 如果連接的兩個并了成分作主語，謂語動詞的數和第一個成分一致。 如：
he gave me money as well as advice. 她除了給我忠告外，還給我錢。
you as well as i are right. 我是對的，你也是對的。
6. not only food production is important but also taking care of the environment. 不僅食物生產很重要，保護好環境也同樣重要。
[問]怎樣理解這個句子結構？
[答]此句相當于：not only food production but also taking care of the environment is important. 并列連詞not only ...but also...意為：“不僅……，而且……”，連接兩個并列的主語food production 和taking care of the environment.
not only... but also ...也可連接兩個并列的謂語、賓語、表語、狀語等，還可連接兩個并列的句子，所強調的重點是后面的一個。有時可省略also。又如：