比较两个东西 (A2)

如果要比较的单词是短单词（只有一个音节，比如 tall, fast, old, cheap），就加 -er，然后用 than。

短单词：加 -er than

• Amina is taller than Lars.
• The metro is faster than the bus.
• This jacket is cheaper than that one.
• Two spelling changes to watch: words like big and hot double the last letter (big → bigger, hot → hotter), and words already ending in -e just add -r (large → larger, nice → nicer).
• So it is bigger (not "biger") and larger (not "largeer").
• 试一试: The metro is ___ the bus. (faster than / more fast than / faster that) 答案: faster than — fast 是短单词，所以加 -er：faster。短单词不能用 "more"（不能说 "more fast"）。比较用的词是 than，不是 "that"：faster than the bus。
• 试一试: July is ___ June this year. (hotter than / hoter than / more hot than) 答案: hotter than — Hot 在加 -er 之前要双写最后一个字母：hotter（不是 "hoter"）。Hot 是短单词，所以加词尾，而不是 "more hot"。
• 试一试: This room is ___ the kitchen. (larger than / largeer than / more large than) 答案: larger than — Large 本来就以不发音的 -e 结尾，所以只加 -r：larger（不是 "largeer"）。Large 是短单词，所以加词尾，而不是 "more large"。

长单词：more ... than

如果单词比较长（两个或更多音节，比如 fa-mous, mo-dern, ex-pen-sive），就不要加 -er。在前面加 more，后面还是用 than。

• Senfarren View Hotel is more expensive than the hostel.
• This book is more interesting than the film.
• Physics is more difficult than math for me.
• Watch out: most two-beat words use more too: more famous, more modern, more careful (not "famouser"). Words ending in -y take the ending instead: busier, happier.
• 试一试: This book is ___ the film. (more interesting than / interestinger than / more interesting that) 答案: more interesting than — interesting 是长单词，所以前面要加 more，不能加 -er 词尾（不能说 "interestinger"）。比较部分还是用 than：more interesting than the film。

以 -y 结尾的单词

这里起决定作用的是 -y 这个结尾，不是单词的长短。看看这个规律：heavy → heavier · easy → easier · happy → happier · busy → busier。y 变成 ier。

• This box is heavier than that one.
• Mondays are busier than Fridays.
• She is happier than before.
• 试一试: This box is ___ that one. (heavier than / more heavy than / heavyer than) 答案: heavier than — heavy 以 -y 结尾，所以 y 变成 ier：heavier（不是 "heavyer"，也不能说 "more heavy"，因为这种短的 -y 单词还是要加词尾）。

good, bad, far

有几个常用词不按这个规律来，你只需要记住这三个：good → better，bad → worse，far → farther（或者 further，适用于任何距离）。

• This café is better than the old one.
• The traffic today is worse than yesterday.
• The station is farther than (or further than) the park.
• 试一试: This café is ___ the old one. (better than / gooder than / more good than) 答案: better than — good 不加 -er，也不用 more，它有自己的形式：better than。（"Gooder" 和 "more good" 是常规规律的写法，但 good 是要单独记住的三个词之一。）
• 试一试: Senfarren View Hotel is ___ the hostel, and the walk there is ___ I thought. (more expensive than … longer than / expensiver than … more long than / more expensive than … more long than) 答案: more expensive than … longer than — expensive 是长单词 → more expensive。long 是短单词 → longer（加 -er）。单词长短决定用哪种形式：长单词用 more，短单词加 -er。